125 Amazing Facts About Space

8/13/2019 125 Amazing Facts About Space

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125 Amazing Facts about Space, Planets and Universe

A Quote:

Consciousness . . . is the phenomenon whereby the universe's very existence is made known.

1.Saturn's moon Titan has plenty of evidence of organic (life) chemicals in its atmosphere. 2.Life is known to exist only on Earth, but in 1986 NASA found what they thought might be

fossils of microscopic living things in a rock from Mars.

3.Most scientists say life's basic chemicals formed on the Earth. The astronomer Fred Hoylesaid they came from space.

4.Oxygen is circulated around the helmet in space suits in order to prevent the visor frommisting.

5.The middle layers of space suits are blown up like a balloon to press against theastronaut's body. Without this pressure, the astronaut's body would boil!

6.The gloves included in the space suit have silicon rubber fingertips which allow theastronaut some sense of touch.

7.The full cost of a spacesuit is about $11 million although 70% of this is for the backpackand the control module.

8.Ever wondered how the pull of gravity is calculated between heavenly bodies? It's simple.Just multiply their masses together, and then divide the total by the square of the distancebetween them.

9.Glowing nebulae are named so because they give off a dim, red light, as the hydrogen gasin them is heated by radiation from the nearby stars.

10.The Drake Equation was proposed by astronomer Frank Drake to work out how manycivilizations there could be in our galaxy - and the figure is in millions.

11.SETI is the Search for ExtraTerrestrial Intelligence - the program that analyzes radiosignals from space for signs of intelligent life.

12. The Milky Way galaxy we live in: is one among the BILLIONS in space. 13.The Milky Way galaxy is whirling rapidly, spinning our sun and all its other stars at around

100 million km per hour.

14.The Sun travels around the galaxy once every 200 million years a journey of 100,000light years.

15.There may be a huge black hole in the very middle of the most of the galaxies. 16.The Universe is probably about 15 billion years old, but the estimations vary.


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17.One problem with working out the age of the Universe is that there are stars in ourgalaxy which are thought to be 14 to 18 billion years old older than the estimated age of

the Universe. So, either the stars must be younger, or the Universe older.

18.The very furthest galaxies are spreading away from us at more than 90% of the speed oflight.

19.The Universe was once thought to be everything that could ever exist, but recenttheories about inflation (e.g. Big Bang) suggest our universe may be just one of countless

bubbles of space time.

20.The Universe may have neither a centre nor an edge, because according to Einsteinstheory of relativity, gravity bends all of space time around into an endless curve.

21. If you fell into a black hole, you would stretch like spaghetti. 22.Matter spiraling into a black hole is torn apart and glows so brightly that it creates the

brightest objects in the Universe quasars.

23.The swirling gases around a black hole turn it into an electrical generator, making it spoutjets of electricity billions of kilometers out into space.

24.The opposite of black holes are estimated to be white holes which spray out matter andlight like fountains.

25.A day in Mercury lasts approximately as long as 59 days on earth. 26.Twice during Mercurys orbit, it gets so close to the Sun and speeds so much that the Sun

seems to go backwards in the sky.

27.Nicolaus Copernicus was the astronomer who first suggested that the Sun was thecentre, and that the Earth went round the sun.

28.The ideas of Copernicus came not from looking at the night sky, but from studyingancient astronomy.

29.As the earth turns, the stars come back to the same place in the night sky every 23 hours,56 minutes and 4.09 seconds. This is a sidereal day (star day).

30.When Neil Armstrong stepped on the Moon for the first time, he said these famouswords: Thats one small step for a man; one giant leap for mankind.

31. From the moon, astronauts brought back 380 kg of Moon rock. 32.During the moon landing, a mirror was left on the Moons surface to reflect a laser beam

which measured the Moons distance from the Earth with amazing accuracy.

33. The stars in each constellation are named after a Greek alphabet. 34.The brightest star in each constellation is called the Alpha Star, the next brightest Beta,

and so on.


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35. The distance to the planets is measured by bouncing radar signals off them and timinghow long the signals take to get there and back.

36.Spacecrafts have double hulls (outer coverings) which protect them against other spaceobjects that crash into them.

37.Manned Spacecrafts have life support systems that provide oxygen to breathe, usuallymixed with nitrogen (as in ordinary air). Charcoal filters out smells/

38. Spacecrafts toilets have to get rid of waste in low gravity conditions, Astronauts have tosit on a device which sucks away the waste. Solid waste is dried and dumped in space, but

the water is saved.

39.A comets tail is made as it nears the Sun and begins to melt. A vast plume of gas millionsof kilometers across is blown out behind by the solar wind. The tail is what you see, shining

as the sunlight catches it.

40. The Shoemaker-Levy 9 comet smashed into Jupiter in July 1994, with the biggest crashever witnessed.

41. Giant stars have burned all their hydrogen, and so burn helium, fusing helium atoms tomake carbon.

42.The constellation of Cygnus, the Swan, contains the very biggest star in the knownuniverse a hyper giant which is almost a million times as big as the sun.

43.Planet Uranus was discovered by William Herschel, who wanted to name the planetGeorge, after King George III, but Uranus was eventually chosen.

44. The first rockets were made 1,000 years ago in China. 45.Robert Goddard launched the very first liquid-fuel rocket in 1926. 46.Over 100 artificial satellites are now launched into space every year, a few of which are

space telescopes.

47.The lower a satellites orbit, the faster it must fly to avoid falling back to the Earth. Mostsatellites fly in low orbits, 300 km from the earth.

48. Hipparchus was the first astronomer to try to work out how far away the Sun is. 49.The red color of Mars is due to oxidized (rusted) iron in its soil. 50.Marss volcano Olympus Mons is the biggest in the solar system. It covers the same area

as Ireland and is three times higher than our Mount Everest.

51. Planets have magnetic field around them because of the liquid iron in their cores. As theplanets rotate, so the iron swirls, generating electric currents that create the magnetic field.

52.Earths atmosphere is the only atmosphere discovered till date that human can breathein.


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53.Earths atmosphere was formed from gases pouring out from volcanoes. 54.Jupiter has no surface for a spacecraft to land on because it is made mostly from helium

gas and hydrogen. The massive pull of Jupiters gravity squeezes the hydrogen so hard that it

is liquid.

55. Jupiter spins right round in less than 10 hours which means that the planets surface ismoving at nearly 50,000 km/hr.

56. The first successful planetary space probe was the USAs Mariner 2, which flew pastVenus in 1962.

57. Voyager 2 has flown over 6 billion km and is heading out of the solar system after passingclose to Neptune in 1989.

58. To save fuel on journeys to distant planets, space probes may use a nearby planetsgravity to catapult them on their way. This is called slingshot.

59. Hubbles law showed that Universe is getting bigger and so must have started verysmall. This led to the idea of Big Bang.

60.Its believed that it was the impact of a big meteorite may have chilled the earth andwiped out all the dinosaurs.

61. The first astronomers thought the regular pulses from far space might be signals fromaliens, and pulsars were jokingly called LGMs (short for Little Green Men).

62. Pulsars probably result from a supernova explosion - that is why most are found in theflat disc of the Milky Way, where supernovae occur.

63. Three moons have yet been found to have their own moons: Saturns moon Titan,Jupiters Lo, and Neptunes Triton.

64. The largest moon in the Solar System is the Jupiters moon Ganymede. 65.Saturn is not solid, but is made almost entirely of gas mostly liquid hydrogen and

helium. Only in the planets very small core is there any rock.

66.Winds ten times stronger than a hurricane on Earth swirl around Saturns equatorreaching up to 1100 km/h and they never let up: even for a moment.

67.The first space station was the Soviet Salyut 1 launched in April 1971; its low orbit meantit stayed up only five months.

68.In April 2001, Dennis Tito became the first space tourist, ferried up to the ISS by theRussian Soyuz space shuttle.

69.Einsteins theory of general relativity shows that gravity not only pulls on matter, but alsospace and even Time itself.


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70.Since the star Deneb is 1800 light years away, we see it as it was when the emperorSeptimus Severius was ruling the Rome (AD 200).

71.With powerful telescopes, astronomers can see galaxies 2 billion light years away. Thismeans we see them as they were when the only life forms in Earth were bacteria.

72. The slowest rotating planet is Venus, which takes 243.01 days to turn around. 73.The fastest spinning objects in the Universe are neutron stars these can rotate 500

times in just 1 second.

74.In summer in Uranus, the sun does not set for 20 years. In winter, darkness lasts for 20years. In autumn, the sun rises and sets every 9 hours.

75.Uranuss moon Miranda is the weirdest moon of all. It seems to have been blasted apart,and then put together again.

76. Solar flares reach temperatures of 10 million C and have the energy of a million atombombs.

77. True binary stars are two stars held together by one anothers gravity, which spend theirlives whirling around together like a pair of dancers.

78. Halley predicted that a comet he had discovered would return in 1758, 16 years after hisdeath, and it really did. It was the first time a comets arrival had been predicted, and the

comet was named after him as Halleys Comet.

79. Ceres is the biggest asteroid in the Solar System 940 km across, and 0.0002% the size ofthe earth.

80. The sun is about 5 billion years old and half a way through its life as a medium sized starit will probably live for around 10 billion years.

81. Neptunes mood Triton is the coldest place in the Solar System, with surfacetemperatures of -236C.

82. Voyager 2 will beam back data until 2020 as it travels beyond the edges of the SolarSystem.

83. The Pioneer 10 and 11 probes carry metal plaques with messages for aliens telling themabout us.

84.Einsteins theory of Special Relativity (1905) shows that all measurements are relative,including time and speed. In other words, time and speed depends upon where you measure

them.

85. When things are falling, their acceleration cancels out gravity, which is why astronauts inorbits are weightless.

86. The first space telescope was the Copernicus, sent out in 1972.


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87.Astronauts learn Scuba diving which helps them to deal with space walks. 88. Weightlessness makes astronauts grow several centimeters during a long mission. 89.The first living creature in space was the dog Laika on board Sputnik 2 in 1957. Sadly,

she died when the spacecrafts oxygen supply ran out.

90.The first manned space flight was made in April 1961 by the Soviet Cosmonaut, YuriGagarin in Vostok 1.

91.The heart of a star reaches 16 million C. A grain of sand this hot would kill someone 150km away.

92. Stars twinkle because we see them through the wafting of the atmosphere. 93. The sun weighs 2,000 trillion trillion tones about 300,000 times as much as the Earth

even though it is made almost entirely of hydrogen and helium, the lightest gases in theUniverse.

94. The sun gets hot because it is so big that the pressure in its core is so tremendous enough to force the nuclei of hydrogen atoms to fuse to make helium atoms. This nuclear

reaction is like a gigantic atom bomb and it releases huge amounts of heat.

95.The nuclear fusion reactions in the Suns core send out billions of light photons everyminute but they take 10 million years to reach its surface.

96.The Hiroshima bombs released 84 trillion joules of energy. A supernova releases 125,000trillion trillion times as such.

97.The most distant galaxies (quasars) have red shifts so big that they must be moving awayfrom us at speeds approaching the speed of light.

98.When light waves from distant galaxies are stretched out his way, they look redder. Thisis called red shift.

99. The moons gravity is 17% of the Earths so astronauts in space suits can jump 4 m highon the moon.

100.The moon is the only other world that humans have set foot on. Because the moon hasno atmosphere or wind, the footprints planted in its dusty surface in 1969 by the Apollo

astronauts are still there today, perfectly preserved.

101. On the moons surface are large dark patches called seas because this is what peopleonce believed they were. They are, in fact, lava flows from ancient volcanoes.

102. Quasars are the most distant known objects in the Universe. Even the nearest is billionsof light years away.

103. The brightest quasar is 3C 273, 2 billion light years away.


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104. The brightest stars in the night sky are not actually stars, but the planets Jupiter, Venus,Mars and Mercury.

105. Jupiters moon Europa may have oceans of water beneath its dry surface and it is amajor target in the search for life in the Solar System.

106. There may be 20 trillion galaxies in the Universe. 107. Galaxies are often found in a group or clusters. One cluster may have 30 or so galaxies in

it.

108. In the 1970s the US Vikings 1 and 2 and the Soviet Mars 3 and 5 probes all reached thesurface of Mars.

109. The Solar System has nine planets including Pluto, but Pluto may be an escaped moonor an asteroid not a planet.

110. The Milky Way belongs to a cluster of 30 galaxies called the Local Group, which is 7million light years across.

111. The Virgo Cluster is 50 million light years away and is made up of 1000 galaxies. 112. For a satellite or a spacecraft to stay in orbit 200 km above the earth, it has to fly over 8

km/sec.

113. When a spacecraft reaches 140% of the orbital velocity i.e. 11.2 km/sec, it is going fastenough to break free of the Earths gravity. This is called escape velocity.

114. Saturns rings are sets of thin rings of ice, dust and tiny rocks, which orbit the planetaround its equator.

115. A tablespoon of neutron star would weigh about ten billion tones. 116. The earth actually takes 365.24219 days to orbit the Sun, which is called one Solar Year.

To compensate for the missing 0.242 days, the western calendar adds an extra day in

February every fourth (leap) year, but misses out three leap years every four centuries.

117. X-Rays cannot reach the earths atmosphere, so astronomers can only detect themusing space telescopes such as ROSAT.

118. The Sun has sunspots, the dark spots on the Suns photosphere (surface), 2000C coolerthan the rest of the surface.

119. After the big bang, there was antimatter, the mirror image of matter. Antimatter andmatter destroyed each other when they met, thus they annihilated. Matter just won, but the

Universe was left almost empty.

120. The afterglow of the Big Bang can still be detected as microwave background radiationcoming from all over space.

121. Dishes in the space telescopes have to be made accurate two billionths of a millimeter.


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122. You can see another galaxy with the naked eye: the Andromeda Galaxy, 2.2 million lightyears away.

123. Dried up riverbeds show that Mars probably once had water in its surface. There issometimes ice at the poles and maybe water underground.

124. For a satellite to fly off into the space, its momentum should be greater than the pull ofgravity of the earth.

125. The future of the Universe may depend on how much dark matter there is. If there istoo much, its gravity will eventually stop the Universes expansion and make it shrink again.

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125 Amazing Facts About Space