IMPORTANT INFORMATION ABOUT UNIVERSE.

IMPORTANT INFORMATION ABOUT UNIVERSE

1. Cheron is the moon of Pluto


2. Total number of satellites are 31 (chk: 50)


3. Blue color of sky is due to Tyndal Effect


4. Our solar system contains 50 satelites


5. Total planets in solar system are 8


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


7. Moon from earth is 385,000 km


8. Outer surface of sum is called photosphere


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


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


11. Venus reflects highest percentage of light


12. Morning star is called to Venus.


13. Venus is the only planet that rotates clockwise


14. Rhea is the fifth natural satellite of Saturn.


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


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


17. Uranus is called lopsided planet


18. Uranus contain atmosphere of Hydrogen and Helium


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


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


21. Volume of Earth is 260 billion cubic miles.


22. Weight of earth is 6586x10 power 18 tons


23. Rings of Saturn were discovered by Galileo in 1610


24. Titan, the largest moon in solar system is of Saturn


25. Triton is a satellite of Neptune


26. Planet referred as Morning Star and Evening Star is Venus


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


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


29. Biggest Comet known to man is kohoutek


30. Only planet whose day is longer than its year is Venus


31. Brightest visible star is Sirus


32. Star nearest to earth is Sun


33. Atmosphere of sun has 3 layers


34. Sun spots are the cooler areas of sun


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


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


37. A light year is equal to 9.46 trillion km


38. Sun radiated energy equal to 10 trillion of TNT explosion


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


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


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


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


43. Mars moon = 2- Phobos and Deimos


44. Mars is named after the Roman god of war.


45. Mars is called Red planet


46. Mars is half the size of earth


47. Europa is a moon of Mars


48. Mars contain atmosphere of carbondioxide


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


50. Jupiter is 11(or 10) times larger than earth


51. Europa is the moon of Jupiter.


52. CHIIRON is the larges comet in the universe.


53. Solar eclipse occurs at new moon


54. Sun is 400 times larger than moon


55. Lunar eclipse occurs at full moon.


56. Halos around the moon are formed because of the phenomenon of ___ (optical phenomena)




58. Jupiter is the fastest planet of the solar system


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


60. The visible part of the Sun is called Photosphere


61. Corona is the outer most halo of the Sun.


62. Mercury and Venus are without Satellites.


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


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


65. A ‘shooting star’ is a meteor.


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


67. 510 million square kilometers is the total surface area of the earth.


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


69. The pulsating universe theory explains the evolution of universe.


70. 760 miles/hr is the speed of sound.


71. 1480, 00,000 km is the distance from sun to earth.


72. Temperature of Sun is 6000 degree C.




74. Saturn is least dense moon = 56


75. Saturn is the second largest planet.


76. Planet with maximum number of moons is Saturn


77. Planet with ring is Saturn


78. Uranus moon = 12, Uranus gives greenish glow


79. Neptune is the coldest, slowest, largest year moon = 8


80. Rank of earth as per size is Fifth


81. Revolution period of earth is 365.25 days


82. In a leap year there are 29 days in Febrary


83. Earth is older than moon


84. Sun light takes 8.3 min to reach earth or 510 seconds


85. Time required to moon light to reach earth is 1.3 seconds


86. Light can circle earth 7 times in a________.


87. Sun is 109 times bigger than earth.


88. Light travels fastest in vaccum


89. Rhea is the fifth natural satellite of saturn


90. Coldest, smallest and farthest planet Neptune


91. Asteroids are small planets revolving round the sun


92. Sun is the brightest star in the universe


93. A shooting star is called a meteor


94. Our galaxy is spiral known as Milky Way


95. Shape of our milky way is spiral


96. The milky way extends through the distance of 10 power 5 light years


97. Super Nova is a dying star


98. Nearest spiral galaxy to Milky Way is Andromeda galaxy


99. Nearest start to our sun is Alpha Centauri


100. Biggest star in our galaxy is Proxima Centauri


101. A collection of galaxies is called cluster


102. .moon is 81 times lighter than earth


103. Moon has 7% reflection as compared to earth (i.e poor reflection)


104. Moon has 1/6th gravitation as that of earth


105. Moon’s 59% surface is visible from earth


106. Mass of moon is 1/8th to that of the earth


107. Moon has no atmosphere


108. Sun is closer to earth in January


109. At perihelion, earth is nearest tosun


110. 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


111. Soros cycle is the largest interval between two total solar eclipses about 18 years


112. Sun has 27 day rotation period


113. Moon’s rotation period is equal to the Earth’s


114. Rotation period of earth is 23hrs, 56min, 4sec


115. Earth rotates around on axis pointing towards the Polar Star


116. Revolution period is 365 ¼ days = 365.25 days, ¼ is added for leap year


117. Duration of day at poles is 6 months.


118. Equinox means equal days and nights


119. Sun’s energy is called Insulation


120. The visible yellow face of sun is called Photosphere


121. The gravity of sun is 28 times greater than that of earth


122. Moon completes 13 circles in a year around earth


123. Sun is 13 x 10 power 5 times larger than earth


124. Maximum duration of solar eclipse is 7 min 40 sec


125. Sun reaches its maximum angular distance from Equator at Solistice


126. Millions of asteroids orbit the sun in the asteroid belt between Mars and Jupiter


127. Asteroids (minor planets) are make of rock, metal or a mixture of both.


128. First asteroid discovered was Ceres by Italian astronomer Guiseppe Piazzi in 1801.


129. Ceres is the largest asteroid


130. Chiron is one of several distant asteroids which orbit between Jupiter and Uranus


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


132. Corona is the outer most halo of the Sun.


133. Comet is made of ice and dust


134. Edmond Halley was the first to calculate the path of a comet and predict when it would be seen again.


135. Halley’s comet was named in his honor though he did not discover it.


136. The patterns in stars are called constellations.


137. In 1930, astronomers finally agreed how to divide the whole sky into 88 areas, which are called constellations.


138. Closest star is Gienah


139. Speed of light is 3,00,000 km/sec


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


141. Galaxies are the families of stars.


142. About 80% of galaxies are elliptical and other are spiral


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


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


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


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


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


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


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


150. Ganymede is the largest moon in the solar system.


151. Europa is the moon of Jupiter


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


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


154. Venus is the only planet that rotates clockwise.


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


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


157. Venus is about the same size as Earth.


158. 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.


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


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


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


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


163. What is the brightest star always in the Northern sky-Vega


164. The most common element in the universe is Nitrogen.


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


166. 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.


167. What is the common name for the star Sirius: Dog Star


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


169. When a satellite is closest to Earth its position is called what Perigee


170. 30 km/s is the approximate mean velocity with which earth moves round the Sun in its orbit.


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


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


173. Light of sun reaches the earth in.....499 seconds


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


175. What is the name of the largest moon of Jupiter-Ganymede


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


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


178. Halos around the moon are formed because of the phenomenon of ___ (optical phenomena)


179. What is unique about the pistol star- Brightest in sky


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


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


182. What's unusual about the moons of Uranus-Named Shakespeare character