Astrophysics (Index)About

Sun

(star at center of solar system)

The Sun is the star around which the solar system revolves.

Compared to other stars:

The study of stars reveals information about the Sun's past and future, and the study of the Sun reveals characteristics that other stars are presumed to have. Aside from evidence for basic stellar structure the Sun shows granulation, constantly changing light and dark spots (called granules) on the order of 1500 km in diameter, and supergranulation, larger (5000-30000 km) slower changing regions, the latter assumed to reflect the regions of convection.

Early main sequence Sun (ZAMS and soon after):

Future Sun:

Some terms:


(star,solar system)
Further reading:
http://en.wikipedia.org/wiki/Sun
http://en.wikipedia.org/wiki/Granule_(solar_physics)
https://ui.adsabs.harvard.edu/abs/2009IAUS..258..395G/abstract
http://bender.astro.sunysb.edu/classes/stars/notes/sun.pdf
http://www.astronomy.ohio-state.edu/~pogge/Lectures/vistas97.html
RedshiftParsecs
/Distance
Lightyears
/Lookback Years
  
~01AU~0lySun

Referenced by pages:
aberration
absolute magnitude (M)
abundances
Advanced Composition Explorer (ACE)
Achernar
A-type star (A)
AD Leonis (AD Leo)
airglow
airmass
Algol (Beta Per)
Alpha Centauri
antenna temperature
apparent magnitude (m)
apsis
Arcturus
ARIEL
asteroid
asteroid belt
asteroseismology
astrometry
astronomical quantities
atmospheric tide
astronomical unit (AU)
AU Microscopii (AU Mic)
aurora
epoch B1950.0
Barnard's Star
B-type star (B)
Bcool
BepiColombo
beta (β)
Betelgeuse
binding energy
black body (BB)
bolometric correction
bow shock
brown dwarf (BD)
CAESAR
calcium (Ca)
Canopus
carbon star (C)
Carrington event
Cassini
carbonaceous chondrite (C chondrite)
celestial equator
celestial sphere
10199 Chariklo
CHIPSat
chondrite
chromosphere
circumstellar disk
CMB anisotropies
coronal mass ejection (CME)
comet
compact object (CO)
convection zone
corona
coronagraph
coronal hole
Coronal Solar Magnetism Observatory (COSMO)
current sheet
continuous viewing zone (CVZ)
Dominion Radio Astrophysical Observatory (DRAO)
drogue chute
Deep Space 1 (DS1)
dwarf planet
dynamo
Earth
earthshine
ecliptic
ecliptic coordinate system
ephemeris
epicycle
epoch
Epsilon Eridani
Epsilon Indi (ε Indi)
equinox
escape velocity (Ve)
Euclid
extreme ultraviolet (EUV)
extra-solar planet
extended source
facula
F-type star (F)
FGK star
field star
FINESSE
fixed star
foe
47 Tucanae (47 Tuc)
frame of reference
Fraunhofer lines
free streaming
Gaia
galactic bulge
galactic coordinate system (GCS)
galactic tide
gauss (G)
G band
G-type star (G)
geomagnetic storm
giant planet
giant star
globular cluster (GC)
Gould's Belt
gravitational collapse
gravity
gravity wave
greenhouse effect
Catalog of Circumpolar Stars (Groombridge)
gyrochronology
H-alpha (Ha)
habitability
habitable zone (HZ)
halo orbit
High Altitude Observatory (HAO)
HD 133131
heliocentric system
heliopause
heliosphere
helium rain
High Energy Transient Explorer (HETE)
Hill radius
Hills cloud
Hipparchus
hyperluminous infrared galaxy (HLIRG)
HR 8799
H-R diagram (HRD)
Hubble Space Telescope (HST)
hypervelocity star (HVS)
hypergiant
International Astronomical Union (IAU)
International Cometary Explorer (ICE)
International Celestial Reference System (ICRS)
insolation
interferometer
ionosphere
iron (Fe)
interstellar magnetic field (ISMF)
J1407
J2
Japan Aerospace Exploration Agency (JAXA)
Julian date (JD)
jansky (Jy)
K2
Kapteyn's Star
kelvin (K)
Kepler Telescope
Kepler's laws
Kelvin-Helmholtz mechanism
Lacaille 9352
Lagrangian point
Lalande 21185
Lambda Boötis star (λ Boo)
luminous blue variable (LBV)
late heavy bombardment (LHB)
LHS 1140
light cone
limb
limb darkening
luminous infrared galaxy (LIRG)
lithium (Li)
Local Bubble
long-period comet
Lorentz force
low mass star (LMS)
local standard of rest (LSR)
luminosity (L)
luminosity function (LF)
lunar water
Luyten 726-8
magnetic arcade
magnetic field
magnetic induction
magnetometer
magnetosphere
magnitude
main sequence star (MS)
Mars
Mars 2020
mass extinction
mass loss
mass-luminosity relation
mass-to-light ratio (M/L)
M-type star (M)
Mercury
metallic hydrogen
metallicity (Z)
Milky Way
minor planet
MMRTG
molecular cloud
moment of inertia factor
moon
Moreton wave
solar mass (MSun)
Mikheyev-Smirnov-Wolfenstein effect (MSW effect)
nebula
nebular hypothesis
near-Earth object (NEO)
neutrino (ν)
neutron star (NS)
National Solar Observatory (NSO)
O5 spectral type (O5)
obliquity
occulting bar
O-type star (O)
Oort Cloud
Oort constants
opposition
orbital element
orbital inclination
orbital period
orbital speed
Orion
orrery
OSO 7
paleomagnetism
parallax
parsec (pc)
PG 1159 star
photosphere
Planck
planet
planetary science
planetoid
planet type
plasma
PLATO
point source
potential energy (PE)
Poynting-Robertson effect
precession
primary
Procyon
proper motion (PM)
Hulse-Taylor Binary (PSR B1913+16)
pulsar timing array (PTA)
quantum efficiency (QE)
quantum mixing
quantum tunneling
quasar (QSO)
radiation zone
radio star
random walk
Rayleigh scattering
magnetic reconnection
RECONS
red clump (RC)
Rigel
right ascension (RA)
Rosetta
Ross 154
Ross 248
rotation period
RR Lyrae variable (RRL)
radio source (RS)
supercritical fluid (SCF)
Scholz's Star
Schuster-Schwarzschild model
Schwarzschild radius
Solar Dynamics Observatory (SDO)
secular
seismic waves
solar energetic particle (SEP)
775 AD event
Shapiro delay
sidereal
signatures of formation
chromospheric activity index
Sirius
67P/Churyumov-Gerasimenko (67P)
SMART-1
Solar Maximum Mission (SMM)
supernova (SN)
solar neutrino unit (SNU)
sodium (Na)
Solar and Heliospheric Observatory (SOHO)
solar apex
solar circle
solar constant
solar eruption
solar flare
solar nebula
solar physics
solar storm
solar system
solar telescope
solar time
solar wind
Solar Orbiter (SolO)
solstice
space weather
SPARTAN
solar particle event (SPE)
spectral class
spectral type
spicule
spiral arm
SSSB
standard gravitational parameter (μ)
standard model of a flare
Stardust
stellar atmosphere
stellar core
stellar demographics
stellar flare
stellar population
stellar radius determination
stellar rotation
stellar structure
stellar wind
STEREO
subdwarf (sd)
subgiant
subsatellite
sunspot
Sun surface features
supergiant
surface abundance
surface brightness (SB)
synodic period
Teegarden's Star
THEMIS
tidal locking
tidal Q
TIMED
time standard
Titan
trans-Neptunian object (TNO)
tomography
TRACE
transit
transiting planet
transition region
TRAPPIST-1
T Tauri
TW Hydrae (TW Hya)
twinkling
Upper Atmosphere Research Satellite (UARS)
ultraviolet (UV)
Ulysses
Uranus
USNO
ultraviolet astronomy
Van Allen belts
variable star
Vega
Venus
visible light
Voyager
vegetation red edge (VRE)
watt (W)
James Webb Space Telescope (JWST)
white dwarf (WD)
Wilkinson Microwave Anisotropy Probe (WMAP)
Wolf 359
Wolf-Rayet star
X-ray source
Yohkoh
Yarkovsky-O'Keefe-Radzievskii-Paddack effect (YORP)
zenith
zodiacal light
zonal flow

Index