Friday, August 2, 2013

30 brightest star in the sky



V Mag.
(m)
Bayer designationProper nameDistance (ly)Spectral classSIMBAD
0−26.74(Sun)0.000 016G2 V
1−1.46α CMaSirius8.6A1 VSirius A
2−0.72α CarCanopus310F0 IaCanopus
3−0.27α Cen AB (α1 Cen)Rigil Kentaurus, Toliman4.4G2 V/K1 VAlpha Centauri A
4−0.04 varα BooArcturus37K1.5 IIIArcturus
50.03α LyrVega25A0 VVega
60.08α AurCapella42G8 III, G1 IIICapella A
70.12β OriRigel770B8 IabRigel
80.34α CMiProcyon11F5 IV-VProcyon
90.42 varα OriBetelgeuse640 [3]M2 IabBetelgeuse
100.50α EriAchernar140B3 VpeAchernar
110.60β CenHadar, Agena350B1 IIIHadar (Agena)
120.77α AqlAltair17A7 VAltair
130.77α CruAcrux320B1 VAcrux A
140.85 varα TauAldebaran65K5 IIIAldebaran
150.96α2 AurCapella B42G1 IIICapella B
161.04α VirSpica260B1 III-IV, B2 VSpica
171.09 varα ScoAntares600M1.5 Iab-bAntares
181.15β GemPollux34K0 IIIbPollux
191.16α PsAFomalhaut25A3 VFomalhaut
201.25α CygDeneb1,550A2 IaDeneb
211.30β CruMimosa, Becrux350B0.5 IVMimosa
221.35α LeoRegulus77B7 VRegulus
231.51ε CMaAdara430B2 IabAdara
241.58α GemCastor52A1 V, A2 VmCastor
251.62λ ScoShaula700B1.5-2 IV+Shaula
261.63γ CruGacrux88M4IIIGacrux
271.64γ OriBellatrix240B2 IIIBellatrix
281.68β TauEl Nath130B7 IIIEl Nath
291.68β CarMiaplacidus110A2 IVMiaplacidus
301.70ε OriAlnilam1,300B0 IabAlnilam







Sunday, July 28, 2013

SPACE

We have nine planets in our Solar System. These planets circle around the sun.

We have the Inner Solar System which has MercuryVenusEarth and not forgetting Mars. These are closest to the sun and are called the terrestrial planets simply because the have very solid rocky surfaces.

The Outer Solar System has Jupiter,SaturnUranusNeptune these are sometimes called the gas giants

Out past Neptune you’ll find the small planet of Pluto which has a solid but icier surface. Many don’t class this as a planet anymore but you can read this on the Pluto page.

These two systems are separated by the asteroid belt

Our Solar System also contains comets, moons, dust, gas and some minor planets.