UNIVERSE

·   Cheron is the moon of Pluto

·   Total number of satellites are 31 (chk: 50)

·   Blue color of sky is due to Tyndal Effect

·   Our solar system contains 50 satelites

·   Total planets in solar system are 8

·   Distance of sun from earth is 150 million km = 1 a.u (angstrom unit)

·   Moon from earth is 385,000 km

·   Outer surface of sum is called photosphere

·   Sun has 90% hydrogen, 8% helium and 2% other elements.

·   Temperature at surface of sun is 6000K and at its center 20 million K

·   Venus reflects highest percentage of light

·   Morning star is called to Venus.

·   Venus is the only planet that rotates clockwise

·   Rhea is the fifth natural satellite of Saturn.

·   Speed of earth in orbit around sun is 8.5 miles per second.

·   The only planet which rotates on its axis from East to West is Uranus

·   Uranus is called lopsided planet

·   Uranus contain atmosphere of Hydrogen and Helium

·   Period of rotation of earth on axis is 1 day or 23 hrs, 56 minutes & 4.09 seconds.

·   Period of revolution of Earth around Sun is 356 days, 6 hrs, 9 minutes & 9.54 seconds.

·   Volume of Earth is 260 billion cubic miles.

·   Weight of earth is 6586x10 power 18 tons

·   Rings of Saturn were discovered by Galileo in 1610

·   Titan, the largest moon in solar system is of Saturn

·   Triton is a satellite of Neptune

·   Planet referred as Morning Star and Evening Star is Venus

·   Venus’ atmosphere is 90 times thicker than earth’s.

·   The temperature of Venus’ surface is about 430 deg: C

·   Biggest Comet known to man is kohoutek

·   Only planet whose day is longer than its year is Venus

·   Brightest visible star is Sirus

·   Star nearest to earth is Sun

·   Atmosphere of sun has 3 layers

·   Sun spots are the cooler areas of sun

·   In 28 days moon returns to the same position in its orbit

·   The light coming from stars give the idea of their temperature.

·   A light year is equal to 9.46 trillion km

·   Sun radiated energy equal to 10 trillion of TNT explosion

·   Mercury is nearest to the sun, smallest and fastest planet, with shortest rotation time. Moon = 0

·   Venus is the brightest, hottest, closest to earth and earth’s twin in size and mass, has largest quantity of CO2 Moon = 0

·   Earth is most dense, watery, bios planet. Moon = 1

·   This is an instrument used for measuring the altitude of a celestial body: sextant

·   Mars   moon = 2- Phobos and Deimos

·   Mars is named after the Roman god of war.

·   Mars is called Red planet

·   Mars is half the size of earth

·   Europa is a moon of Mars (chk:)

·   Mars contain atmosphere of carbondioxide

·   Jupiter is largest, with largest number of satellites, smallest day, with a red spot. Moon = 63

·   Jupiter is 11(or 10) times larger than earth

·   Europa is the moon of Jupiter.

·   CHIIRON is the larges comet in the universe.

·   Solar eclipse occurs at new moon

·   Sun is 400 times larger than moon

·   Lunar eclipse occurs at full moon.

·   Halos around the moon are formed because of the phenomenon of  (optical phenomena)

·   Jupiter is the fastest planet of the solar system

·   The Asteroid Belt is found between which of the following planets?  Mars and Jupiter

·   The visible part of the Sun is called Photosphere

·   Corona is the outer most halo of the Sun.

·   Mercury and Venus are without Satellites.

·   The largest crater on the surface of moon is called to Bailly.

·   The earth is calculated to b 4540 million years old.

·   A ‘shooting star’ is a meteor.

·   At 7050 km per hour, Sun rotate on its axis.

·   510 million square kilometers is the total surface area of the earth.

·   The northern polar lights are called Aurorae Borealis, and southern polar lights are called Aurorae Australis.

·   The pulsating universe theory explains the evolution of universe.

·   760 miles/hr is the speed of sound.

·   1480, 00,000 km is the distance from sun to earth.

·   Temperature of Sun is 6000 degree C.

·   Saturn is least dense moon = 56

·   Saturn is the second largest planet.

·   Planet with maximum number of moons is Saturn

·   Planet with ring is Saturn

·   Uranus moon = 12, Uranus gives greenish glow

·   Neptune is the coldest, slowest, largest year

·   Neptune has 8 moons.

·   Rank of earth as per size is Fifth

·   Revolution period of earth is 365.25 days

·   In a leap year there are 29 days in Febrary

·   Earth is older than moon

·   Sun light takes 8.3 min to reach earth or 510 seconds

·   Time required to moon light to reach earth is 1.3 seconds

·   Light can circle earth 7 times in a second.

·   Sun is 109 times bigger than earth.

·   Light travels fastest in vaccum

·   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 1/6^th gravitation as that of earth

·   Moon’s 59% surface is visible from earth

·   Mass of moon is 1/8^th 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

·   Which planet is named after the Roman god of war? Mars

·   Galaxies are the families of stars.

·   About 80% of galaxies are elliptical and other are spiral

·   Elliptical galaxies contain very little gas and dust and hardly any new stars are born in them.

·   Spiral galaxies are disk shaped and usually have clouds of dust and gas where new stars are born.

·   Light travels at 3,00,000 km/s. the speed at which you can round the world seven times in very second.

·   Light takes 8 minutes to reach the earth from sun.

·   In space light travels 9461 million million km in a year. Astronomers call this distance a light-year.

·   Two planets Earth’s could fit side by side inside the Great Red Spot of Jupiter.

·   Jupiter’s volcanic moon is called IO and other moons are Europa, Ganymede and Callisto.

·   Ganymede is the largest moon in the solar system.

·   Europa is the moon of Jupiter

·   The moon has no atmosphere because its gravitational pull is not strong enough to hold an atmosphere

·   Chondrite meteorites are the oldest rocks in the solar system.

·   Venus is the only planet that rotates clockwise.

·   ‘Galileo Satellites’, named after their discoverer, are four large moons of the planet

·   Mars contain atmosphere of Carbon dioxide and Uranus contain atmosphere of Hydrogen and Helium.

·   Venus is about the same size as Earth.

·   Venus’s atmosphere is 90 times thicker than our. It traps so well that the temperature of Venus’s surface is about 430 degree centigrade.

·   Closest star is (Gienah) 680,000 million, million, kilometers.

·   Nicolous Copernicus (1473-1543) was born in Poland. He was the first to explain the solar system.

·   Chiron is one of several distant asteroids with orbits between Jupiter and Uranus.

·   In the Solar system there are 2 Mount Olympus's Greece and where-Mars

·   What is the brightest star always in the Northern sky-Vega

·   The most common element in the universe is Nitrogen.

·   Hydra is the largest of the 88 constellations found in the universe. It covers about 3.16 % of the entire sky.

·   The M-class supergiant Betelgease with a diametre of 700 million kms is the largest star of the universe. It is about 500 times greater than the sun.

·   What is the common name for the star Sirius: Dog Star

·   Pluto (the Planet) was almost called what name-Zeus

·   When a satellite is closest to Earth its position is called Perigee

·   30 km/s is the approximate mean velocity with which earth moves round the Sun in its orbit.

·   The earth’s reflectivity of solar radiation is termed as albedo.

·   Joseph von Fraunhofer was the first to explain the presence of dark lines in the sun’s spectrum.

·   Light of sun reaches the earth in 499 seconds

·   Hale-Bopp comet was the most distant comet ever discovered which became visible in December 1996.

·   What is the name of the largest moon of Jupiter-Ganymede

·   M31 is the nearest galaxy to us - what is its other name-Andromeda

·   The earth is the densest planet of universe .It has density of 5.515 time that of water.

·   Halos around the moon are formed because of the phenomenon of optical phenomena.

·   What is unique about the pistol star- Brightest in sky

·   Name the first teddy bear in space- Mishka 1980 Olympic mascot

·   What celestial body gets its name from the Greek long haired Comet

·   What's unusual about the moons of Uranus-Named Shakespeare characters