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Regular period of least solar activity
Solar minimum is the regular period of least solar activity in the Sun's 11-year solar cycle. During solar minimum, sunspot and solar flare activity diminishes
Solar_minimum
Hypothesized period of low solar activity from 1460 to 1550
The Spörer Minimum is a hypothesized 90-year span of low solar activity, from about 1460 until 1550, which was identified and named by John A. Eddy in
Spörer_Minimum
Period of low solar activity, 1645–1715
temperatures. The reduced solar activity may have contributed to the climatic cooling, although the cooling began before the solar minimum and its primary cause
Maunder_Minimum
Periodic change in the Sun's activity
of minimum activity to a period of a maximum activity back to a period of minimum activity. The magnetic field of the Sun flips during each solar cycle
Solar_cycle
Period of low solar activity from 1790 to 1830
The Dalton Minimum was a period of low sunspot count, representing low solar activity, named after the English meteorologist John Dalton, lasting from
Dalton_Minimum
Star at the centre of the Solar System
The Sun is the star located at the centre of the Solar System. It is a massive sphere of hot plasma, heated to incandescence by nuclear fusion reactions
Sun
Solar activity from 2019 to about 2030
Modern Gleissberg Minimum. The Solar Cycle 25 Prediction Panel predicted in December 2019 that solar cycle 25 will be similar to solar cycle 24, with the
Solar_cycle_25
Regular period of greatest solar activity
7310 BC, 7520 BC, 8220 BC, 9170 BC. Solar wind Solar variation Solar minimum List of solar cycles – table of solar cycles NASA C. D. Camp & K. K. Tung
Solar_maximum
Outermost layer of the Sun's atmosphere
structured by the solar magnetic field. The solar corona lies above the photosphere and chromosphere and extends out to the edge of the solar atmosphere where
Solar_corona
Geomagnetic storm in 1859
geomagnetic storm in recorded history, peaking on 1–2 September 1859 during solar cycle 10. It created strong auroral displays that were reported globally
Carrington_Event
Measurement of electromagnetic radiation
that time period. This integrated solar irradiance is called solar irradiation, solar radiation, solar exposure, solar insolation, or insolation. Irradiance
Solar_irradiance
corroborated by tree rings. It unexpectedly appears to have occurred near a solar minimum and was as strong as, or probably even slightly stronger than the famous
List_of_solar_storms
Intensity of sunlight or solar constant
as being 1.361 kilowatts per square meter (kW/m2) at solar minimum (the time in the 11-year solar cycle when the number of sunspots is minimal) and approximately
Solar_constant
Solar minimum that took place between 800 and 600 BC
The Homeric Minimum is a grand solar minimum that started about ca. 800 BC and lasted around 200 years. It appears to coincide with, and have been the
Homeric_Minimum
Temporary spots on the Sun's surface
cycle is known as solar maximum, and the point of lowest activity as solar minimum. This period is also observed in most other solar activity and is linked
Sunspot
Central region of the Sun
The solar core is the hot, dense region at the center of the Sun where energy is generated by nuclear fusion. It is considered to extend from the Sun's
Solar_core
Solar activity from December 2008 to December 2019
recent solar cycles, down to a level which had not been seen since cycles 12 to 15 (1878-1923). Prior to the minimum between the end of Solar Cycle 23
Solar_cycle_24
Physical process that generates a star's magnetic field
field. At a typical solar minimum, few or no sunspots are visible. Those that do appear are at high solar latitudes. As the solar cycle progresses towards
Solar_dynamo
American astronomer
NP-2009-1-066-GSFC, U.S., 2009, 311 pp, ISBN 0160838088. Solar variation Climate change Maunder Minimum Spörer Minimum Arctowski Medal, National Academy of Sciences
John_A._Eddy
Musical artist
released five solo albums: Mayfly (2005), The Returning Sun (2007), Solar Minimum (2009), The Horse's Mouth (2013) and Lockdown (2020). His Cinema for
Cy_Curnin
the United States, the minimum wage is set by federal U.S. labor law and a range of state and local laws. The first federal minimum wage was instituted in
Minimum wage in the United States
Minimum_wage_in_the_United_States
Angle between the zenith and the centre of the Sun's disc
At solar noon, the zenith angle is at a minimum and is equal to the absolute value of latitude minus solar declination angle. This is the basis by which
Solar_zenith_angle
Stream of charged particles from the Sun
that emission of the slow solar wind occurred at latitudes up to 30–35° during the solar minimum (the period of lowest solar activity), then expanded toward
Solar_wind
Region of space dominated by the Sun
In particular, the effect of the 11-year solar cycle, which sees a distinct maximum and minimum of solar wind activity, is thought to be significant
Heliosphere
Northern Hemispheric cooling period
(feedback to the effects of the volcanoes), coupled with an "exceptional" minimum of solar activity in the 600s, reinforced and extended the cooling. According
Late_Antique_Little_Ice_Age
Radiant light and heat from the Sun, harnessed with technology
either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power. Active solar techniques include
Solar_energy
Natural phenomena within the Sun's atmosphere
Solar phenomena are natural phenomena which occur within the atmosphere of the Sun. They take many forms, including solar wind, radio wave flux, solar
Solar_phenomena
Cool, tenuous region of the Sun's corona
polar coronal holes during the declining phase of the solar cycle and at solar minimum. During solar maxima, the number of coronal holes decreases until
Coronal_hole
Structure extending off of the Sun's surface
In solar physics, a prominence, sometimes referred to as a filament, is a large plasma and magnetic field structure extending outward from the Sun's surface
Solar_prominence
Study of the Sun's behavior
Solar observation is the scientific endeavor of studying the Sun and its behavior and relation to the Earth and the remainder of the Solar System. Deliberate
Solar_observation
Structure in the Sun's corona
surface. The solar wind elongates these loops to pointed tips which can extend a solar radius or more into the corona. During solar minimum, helmet streamers
Helmet_streamer
Layer of the Earth's atmosphere above the mesosphere and below the exosphere
the strongest cooling and contraction occurring in that layer during solar minimum. The most recent contraction in 2008–2009 was the largest such since
Thermosphere
Amateur radio frequency band
and East Asia in late afternoon and early evening. Even in times of solar minimum, when propagation on 10 meters via F2 is practically nonexistent, the
10-meter_band
American space physicist
varied systematically with the solar cycle, reaching about 2.1% per AU at solar maximum and about 1.2% per AU at solar minimum; These measurements implied
James_Van_Allen
Solar activity from December 1855 to March 1867
number observed during the solar cycle was 186.2 (February 1860), and the starting minimum was 6.0. During the transit from solar cycle 10 to 11, there were
Solar_cycle_10
Ejecta from the Sun's corona
ejections depends on the phase of the solar cycle: from about 0.2 per day near the solar minimum to 3.5 per day near the solar maximum. However, the peak CME
Coronal_mass_ejection
Short term magnetosphere disturbance
once or twice a month during the maximum of the solar cycle and a few times a year during solar minimum. Substorms, on the other hand, take place over
Substorm
Solar activity from September 1986 to August 1996
observed during the solar cycle was 212.5 (November 1989), and the starting minimum was 13.5. During the minimum transit from solar cycle 22 to 23, there
Solar_cycle_22
Total eclipse
effects visible, and a very nice corona, despite the proximity to the solar minimum. The partial phase of the eclipse was also visible from the International
Solar eclipse of March 29, 2006
Solar_eclipse_of_March_29,_2006
the Maunder minimum. It was proposed that one cycle might have been lost in the late 18th century, but this remains not fully confirmed. Solar cycles can
List_of_solar_cycles
Solar activity from April 1954 to October 1964
1958 (the highest on record), and the starting minimum was 5.1. During the minimum transit from solar cycle 19 to 20, there were a total of 227 days with
Solar_cycle_19
Solar activity from August 1996 to December 2008
observed during the solar cycle was 180.3 (November 2001), and the starting minimum was 11.2. During the minimum transit from solar cycle 23 to 24, there
Solar_cycle_23
Soviet/Russian space station (1986–2001)
et al. (1998). "Radiation environment on the Mir orbital station during solar minimum". Advances in Space Research. 22 (4): 501–510. Bibcode:1998AdSpR..22
Mir
Medieval Solar Maximum event from 1100-1250s
and eventually giving way to the Wolf minimum. Jirikowic, J. L.; Damon, P. E. (1994-03-01). "The medieval solar activity maximum". Climatic Change. 26
Medieval_maximum
NASA satellite of the Explorer program, at SE-L1 from 1997
after solar minimum, the part of the 11-year solar cycle when solar activity is lowest. The lowest-energy particles come from the slow and fast solar wind
Advanced_Composition_Explorer
Event wherein the Sun is obscured by the Moon
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially
Solar_eclipse
Solar activity from March 1867 to December 1878
observed during the solar cycle was 234.0 (August 1870), and the starting minimum was 9.9. During the minimum transit from solar cycle 11 to 12, there
Solar_cycle_11
American solar physicist
Interval in the Context of a Long and Structured Solar Minimum: An Overview from Sun to Earth". Solar Physics. 274 (1–2): 5–27. Bibcode:2011SoPh..274.
Sarah_E._Gibson
Disturbance of the Earth's magnetosphere
often originate from solar active regions, while the latter originate at the boundary between high- and low-speed streams of solar wind. The frequency
Geomagnetic_storm
Long-lived radioisotope of chlorine
Muscheler (2022). "Cosmogenic radionuclides reveal an extreme solar particle storm near a solar minimum 9125 years BP". Nat. Commun. 13 (214). doi:10.1038/s41467-021-27891-4
Chlorine-36
Space propulsion method using Sun radiation
Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight
Solar_sail
Instrument aboard the Voyager 1 and Voyager 2 spacecraft
oxygen, and neon during the solar minimum were measured using the CRS instrument on the Voyagers that year. The solar minimum of 1977 occurred towards the
Cosmic_Ray_Subsystem
telescopes in Earth orbit, the minimum and maximum altitude are given in kilometers. For telescopes in solar orbit, the minimum distance (periapsis) and the
List_of_space_telescopes
Branch of space physics and aeronomy
with the varying conditions within the Solar System and its heliosphere. This includes the effects of the solar wind, especially on the Earth's magnetosphere
Space_weather
Solar activity from March 1976 to September 1986
observed during the solar cycle was 232.9, in December 1979, and the starting minimum was 17.8. During the minimum transit from solar cycle 21 to 22, there
Solar_cycle_21
Binary star system in the constellation Reticulum
distance of about 39.3 light-years (12 parsecs) from Earth. Both stars are solar analogs that have characteristics similar to those of the Sun. They belong
Zeta_Reticuli
the time of solar minimum, the Sun's internal, poloidal (parallel with the solar meridian) magnetic field is wrapped around the Sun via solar differential
Transequatorial_loop
Curved path of an object around a point
to solar forcing and space weather. During a solar maximum, the Earth's atmosphere causes drag up to a hundred kilometres higher than during a solar minimum
Orbit
Solar activity from July 1913 to August 1923
observed during the solar cycle was 175.7 (August 1917), and the starting minimum was 2.5. During the minimum transit from solar cycle 15 to 16, there
Solar_cycle_15
Solar activity from August 1923 to September 1933
observed during the solar cycle was 130.2 (April 1928), and the starting minimum was 9.4. During the minimum transit from solar cycle 16 to 17, there
Solar_cycle_16
Red dwarf star in the constellation Aquarius
Different sources estimate that TRAPPIST-1 emits as much as the Sun at solar minimum, the same amount or more than the Sun. The fraction of radiation in
TRAPPIST-1
Solar activity from October 1964 to March 1976
observed during the solar cycle was 156.6 (November 1968), and the starting minimum was 14.3. During the minimum transit from solar cycle 20 to 21, there
Solar_cycle_20
Type of mediumwave radio reception
stations occurs regularly during the early morning, especially during the solar minimum. CJYQ 930 kHz and VOCM 590 kHz (both from St. John's, Newfoundland and
MW_DX
The formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of
Formation and evolution of the Solar System
Formation_and_evolution_of_the_Solar_System
NASA probe of the Sun's outer corona
The Parker Solar Probe (PSP; previously Solar Probe, Solar Probe Plus or Solar Probe+) is a NASA space probe launched in 2018 to make observations of
Parker_Solar_Probe
Region of a star
sequence stars below about 0.3 solar masses are entirely convective, meaning they do not have a radiative zone. From 0.3 to 1.2 solar masses, the region around
Radiative_zone
Region of a star
of which is visible in the Sun as solar granulation. Low-mass main-sequence stars, such as red dwarfs below 0.35 solar masses, as well as pre-main sequence
Convection_zone
Cold period during the Little Ice Age
of solar radiation reaching the Earth's surface was lower than it is today due to an event known as the Maunder Minimum; the most recent Grand Solar Minimum
Grindelwald_Fluctuation
Gas layer surrounding Venus
surface of Venus. This distance was measured in 2007 near the solar activity minimum. Near the solar activity maximum it can be several times further from the
Atmosphere_of_Venus
India earth-observing satellite
NASA disagreed, saying the debris could last for years because the solar minimum had contracted the atmosphere that would otherwise cause the debris
Microsat-R
Solar activity from September 1933 to February 1944
observed during the solar cycle was 198.6 (April 1937), and the starting minimum was 5.8. During the minimum transit from solar cycle 17 to 18, there
Solar_cycle_17
Solar magnetic field model
used coronal magnetic field model that assumes the magnetic field in the solar corona is current-free up to a spherical outer boundary, the "source surface
Potential-field source-surface model
Potential-field_source-surface_model
Muscheler (2022). "Cosmogenic radionuclides reveal an extreme solar particle storm near a solar minimum 9125 years BP". Nat. Commun. 13 (214): 214. Bibcode:2022NatCo
Isotopes_of_beryllium
Overview of and topical guide to solar energy
ever-evolving technologies. Solar energy technologies include solar heating, solar photovoltaics, solar thermal electricity and solar architecture. These can
Outline_of_solar_energy
Stratovolcano in Peru
other volcanic eruptions around that time and the beginning Spörer solar minimum, the AD 1440–1470 eruption of Misti may have affected global climate
Misti
American physicist
Bourdeau, R. E.; Aikin, A. C.; Donley, J. L. (1966). "Lower ionosphere at solar minimum". Journal of Geophysical Research. 71 (3): 727–740. Bibcode:1966JGR
Robert_E._Bourdeau
Solar power consists of photovoltaics (PV) and solar thermal energy in the European Union (EU). In 2010, the €2.6 billion European solar heating sectors
Solar power in the European Union
Solar_power_in_the_European_Union
Field of scientific study
do not match the solar activity variations and that the commonly-invoked association of the Little Ice Age with the Maunder minimum is far too simplistic
Solar_activity_and_climate
Star in the constellation Ursa Major
S2CID 27151456. Lubin, Dan; et al. (March 2012). "Frequency of Maunder Minimum Events in Solar-type Stars Inferred from Activity and Metallicity Observations"
47_Ursae_Majoris
Solar activity from December 1878 to March 1890
observed during the solar cycle was 124.4 (December 1883), and the starting minimum was 3.7. During the minimum transit from solar cycle 12 to 13, there
Solar_cycle_12
Pollution around Earth by defunct artificial objects
at solar maximum (due to the heating and expansion of the Earth's atmosphere creating more drag), but one about every three days at solar minimum, usually
Space_debris
NASA/DLR solar probes launched in 1974–76
while dissipating the excess heat. The power supplied by the solar panels is a minimum of 240 watts when the probe is at aphelion. Its voltage is regulated
Helios_(spacecraft)
Overview of the scientific field of astronomy
variation Solar cycle List of solar cycles Solar maximum Solar minimum Wolf number Solar flare Helioseismology Heliosphere Solar wind Heliospheric current
Outline_of_astronomy
Concept of collecting solar power in outer space and distributing it to Earth
Space-based solar power (SBSP or SSP) is the concept of collecting solar power in outer space with solar power satellites (SPS) and distributing it to
Space-based_solar_power
American solar energy company
preponderance of the evidence reveals that Tesla paid a fair price—SolarCity was, at a minimum, worth what Tesla paid for it,” Slights added. The court also
SolarCity
Solar Energy Company
Commission alleged that Shenzhen Topray Solar had repeatedly violated the minimum price agreement for solar products. In 2020, a whistleblower in Uganda
Topray_Solar
Technology to create global images of otherwise invisible phenomena
occurs as the solar cycle varies from solar minimum to solar maximum. The interstellar and solar winds are mainly protons (H+), with the solar wind also containing
Energetic_neutral_atom
Use of mirrors or lenses to heat a fluid for electricity generation
Concentrated solar power (CSP), also called concentrating solar power or concentrated solar thermal, involves systems that collect solar heat for multiple
Concentrated_solar_power
Solar activity from November 1833 to July 1843
smoothed sunspot number observed during the solar cycle was 244.9 (March 1837), and the starting minimum was 12.2. Solar cycle 8 ended in 1843, the year that
Solar_cycle_8
Planetary and atmospheric scientist; studies the atmospheres of Earth and Mars
measurements of atomic hydrogen in the upper atmosphere of Mars at solar minimum prior to the Viking encounter with Mars. As a result of his observations
Joel_S._Levine
Atmospheric optical phenomenon
Chloe Rose (April 15, 2024). "A Surprising Shadow Was Created by the Total Solar Eclipse". The New York Times. ""Disk with a hole" in the sky". Atmospheric
22°_halo
Solar maximum Solar minimum Solar mirror Solar nebula Solar neon Solar Orbiter Solar oven Solar pond Solar power Solar power by country Solar power in Australia
Index of solar energy articles
Index_of_solar_energy_articles
Star in the constellation Virgo
Tytler, David; Kirkman, David (March 2012). "Frequency of Maunder Minimum Events in Solar-type Stars Inferred from Activity and Metallicity Observations"
61_Virginis
Light emitted by the Sun
portion of the electromagnetic radiation which is emitted by the Sun (i.e. solar radiation) and received by the Earth, in particular the visible light perceptible
Sunlight
Star in the constellation Scutum
pulsating variable star, with a maximum brightness of magnitude 8.29 and a minimum of magnitude 10.56, which makes it too dim for naked-eye visibility. It
UY_Scuti
cycle - solar flare - solar flux - solar flux unit - solar maximum - solar minimum - solar radiation storm level - solar rotation rate - solar transition
Index of radio propagation articles
Index_of_radio_propagation_articles
Alternative to silicon-based photovoltaics
system now form the basis of the most efficient perovskite solar cells known today. Its minimum bandgap is closer to the optimal for a single-junction cell
Perovskite_solar_cell
Measure of close approach in astronomy
"Minimum Orbital Intersection Distance", Lowell Observatory, retrieved online 14 May 2009, archived 15 July 2015. Basics of Space Flight: The Solar System
Minimum orbit intersection distance
Minimum_orbit_intersection_distance
Method to produce electricity from solar radiation
and as photosensors. A photovoltaic system employs solar modules, each comprising a number of solar cells, which generate electrical power. PV installations
Photovoltaics
Large cap index within the NASDAQ exchange
NYSE. April 23, 2012 TXN Texas Instruments FSLR First Solar First Solar did not meet the minimum monthly weight requirements. December 19, 2011 AVGO Avago
Nasdaq-100
SOLAR MINIMUM
SOLAR MINIMUM
Boy/Male
Hindu, Indian
Place Name in Karnataka Bhopal
Boy/Male
Sikh
Adornment
Boy/Male
Indian
King of Solar System
Girl/Female
Indian, Tamil
Garden
Boy/Male
Hindu, Indian
Area Covered with One Type of Tree; Flowers; Maancholai means Mango Plantations; Pooncholai means Flower Garden
Girl/Female
Arabic, Muslim
One of the Solar Planet
Male
Egyptian
, glory of the Solar Disk.
Boy/Male
Muslim
Leader
Girl/Female
Arabic, Bengali, Hindu, Indian, Muslim, Punjabi, Sikh
Blessing; The Seventh Solar Month of the Calendar
Boy/Male
Bengali, Hindu, Indian, Malayalam, Marathi, Tamil, Telugu
King of the Solar Race
Boy/Male
Celtic, French, Gujarati, Indian
Name of Flower
Boy/Male
Muslim/Islamic
Leader
Boy/Male
Tamil
The polar star, Firm, Unshakable
Boy/Male
Hindu
The polar star, Firm, Unshakable
Boy/Male
Tamil
Dhruvansh | தà¯à®°à¯à®µà®‚à®·Â
A part of polar star
Dhruvansh | தà¯à®°à¯à®µà®‚à®·Â
Boy/Male
Hindu, Indian
Sun or Solar
Girl/Female
Arabic, British, English, Portuguese, Russian
Beautiful Butterfly
Boy/Male
Hindu, Indian, Sanskrit
Solar
Boy/Male
Hindu
A part of polar star
Boy/Male
Arabic, Australian, Farsi, Iranian, Kurdish, Muslim, Parsi, Pashtun
Leader
SOLAR MINIMUM
SOLAR MINIMUM
Boy/Male
Muslim/Islamic
Eagle
Boy/Male
Arabic, Farsi, Hindu, Indian, Iranian, Irish, Muslim, Parsi, Tamil
Intelligent; Worthy; Deserving; Meriting; Variant of Shea Courteous
Surname or Lastname
English
English : perhaps a variant of Skoyles, a Norfolk name of unexplained etymology.
Boy/Male
Irish Latin
Good.
Girl/Female
Tamil
Ambily | à®…à®®à¯à®ªà¯€à®²à¯à®¯
Moon
Boy/Male
Hindu, Indian
Virtuous
Boy/Male
Indian, Telugu
Husband of Valli
Boy/Male
Tamil
Limitless, Indestructible, Imperishable, Endless, Boundless, Incomparable Lord, Unique
Boy/Male
Gujarati, Hindu, Indian
Compassionate of Lord Shiva
Male
Hebrew
(מִיכָ×) Hebrew name MIYKA means "who is like God?" In the bible, this is the name of several characters, including the father of Mattaniah.
SOLAR MINIMUM
SOLAR MINIMUM
SOLAR MINIMUM
SOLAR MINIMUM
SOLAR MINIMUM
a.
Of or pertaining to the sun; proceeding from the sun; as, the solar system; solar light; solar rays; solar influence. See Solar system, below.
n.
A loft or garret. See Solar, n.
n.
The measurement of the force of solar radiation.
n.
Any one of the teeth back of the incisors and canines. The molar which replace the deciduous or milk teeth are designated as premolars, and those which are not preceded by deciduous teeth are sometimes called true molars. See Tooth.
a.
Pertaining to, reckoned from, or having a common radiating point; as, polar coordinates.
n.
See Solar, n.
n.
One of the asteroids. See Solar.
a.
See Polar.
n.
A solan goose.
n.
See Sola.
a.
Solar.
n.
The right line drawn through the two points of contact of the two tangents drawn from a given point to a given conic section. The given point is called the pole of the line. If the given point lies within the curve so that the two tangents become imaginary, there is still a real polar line which does not meet the curve, but which possesses other properties of the polar. Thus the focus and directrix are pole and polar. There are also poles and polar curves to curves of higher degree than the second, and poles and polar planes to surfaces of the second degree.
a.
Born under the predominant influence of the sun.
a.
Measured by the progress or revolution of the sun in the ecliptic; as, the solar year.
v. t.
To cover, or provide with, a sollar.
a.
A loft or upper chamber; a garret room.
a.
Having power to grind; grinding; as, the molar teeth; also, of or pertaining to the molar teeth.
a.
Produced by the action of the sun, or peculiarly affected by its influence.
n.
Solary; military pay.
a.
Of or pertaining to one of the poles of the earth, or of a sphere; situated near, or proceeding from, one of the poles; as, polar regions; polar seas; polar winds.