•
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 yearmoon = 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