• Rhea is the fifth natural satellite of saturn
• Coldest, smallest and farthest planet Neptune
• Asteroids are small planets revolving round the sun
• Sun is the brightest star in the universe
• A shooting star is called a meteor
• Our galaxy is spiral known as Milky Way
• Shape of our milky way is spiral
• The milky way extends through the distance of 10 power 5 light years
• Super Nova is a dying star
• Nearest spiral galaxy to Milky Way is Andromeda galaxy
• Nearest start to our sun is Alpha Centauri
• Biggest star in our galaxy is Proxima Centauri
• A collection of galaxies is called cluster
• .moon is 81 times lighter than earth
• Moon has 7% reflection as compared to earth (i.e poor reflection)
• Moon has 1/6th gravitation as that of earth
• Moon’s 59% surface is visible from earth
• Mass of moon is 1/8th to that of the earth
• Moon has no atmosphere
• Sun is closer to earth in January
• At perihelion, earth is nearest tosun
• Earth’s axis is inclined at an angle of 66 ½ deg: to the plane of its orbit around the sun or the axis is inclined at 23 ½ deg: from the vertical
• Soros cycle is the largest interval between two total solar eclipses about 18 years
• Sun has 27 day rotation period
• Moon’s rotation period is equal to the Earth’s
• Rotation period of earth is 23hrs, 56min, 4sec
• Earth rotates around on axis pointing towards the Polar Star
• Revolution period is 365 ¼ days = 365.25 days, ¼ is added for leap year
• Duration of day at poles is 6 months.
• Equinox means equal days and nights
• Sun’s energy is called Insulation
• The visible yellow face of sun is called Photosphere
• The gravity of sun is 28 times greater than that of earth
• Moon completes 13 circles in a year around earth
• Sun is 13 x 10 power 5 times larger than earth
• Maximum duration of solar eclipse is 7 min 40 sec
• Sun reaches its maximum angular distance from Equator at Solistice
• Millions of asteroids orbit the sun in the asteroid belt between Mars and Jupiter
• Asteroids (minor planets) are make of rock, metal or a mixture of both.
• First asteroid discovered was Ceres by Italian astronomer Guiseppe Piazzi in 1801.
• Ceres is the largest asteroid
• Chiron is one of several distant asteroids which orbit between Jupiter and Uranus
• The largest crater on the surface of moon is called to Bailly.
• Corona is the outer most halo of the Sun.
• Comet is made of ice and dust
• Edmond Halley was the first to calculate the path of a comet and predict when it would be seen again.
• Halley’s comet was named in his honor though he did not discover it.
• The patterns in stars are called constellations.
• In 1930, astronomers finally agreed how to divide the whole sky into 88 areas, which are called constellations.
• Closest star is Gienah
• Speed of light is 3,00,000 km/sec
Latest Who is Who & What is What (Complete General Knowledge Book) for PPSC PMS PCS FPSC CSS Competitive Exam Preparation Most Helping Guide of PMS Jobs Written Test MCQs Information by Adspk
Adspk11
23/11/2015
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