General information About UNIVERSE
IMPORTANT INFORMATION ABOUT 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
- 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 moon = 8
- 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________.
- 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 1/6th 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
- 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 planet 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 what 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
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