The force of gravity is very strong on a neutron star because of its amazing density. Your weight on a neutron star would be 10,000 million times greater than on Earth.
The giant red star Betelguese – the red star in the shoulder of the constellation Orion – is 700 million miles across, about 800 times larger than the Sun. Light takes 1 hour to travel from one side of the giant star to the other
The gold-plated 33-rpm record "Camelot" was left behind on the moon by the Apollo astronauts.
The heaviest known meteorite to fall to Earth – the Hoba West meteorite – lies where it fell in Africa. Weighing about 60 tons, it is not likely to be moved.
The Hercules global cluster is the brightest cluster in the northern sky. It was discovered by English scientist Edmond Halley in 1714.
The largest crater that can be seen on the Moon is called Bailly, or the "fields of ruin." It covers an area of about 26,000 square miles, about the size of West Virginia, and is over three times the size of Wales.
The largest refracting telescope is the 40-inch Yerkes telescope, built in 1897 and still in use. All larger telescopes are of the "reflecting" variety, using mirrors instead of lenses.
The last words spoken from the moon were from Eugene Cernan, Commander of the Apollo 17 mission on December 11, 1972.
"As we leave the Moon at Taurus-Littrow, we leave as we came, and, God willing, we shall return, with peace and hope for all mankind."
The layer of gas that spreads out from a nova explosion can be traveling at speeds of 5 million miles per hour.
The moon is always falling. It has a sideways motion of its own that balances its falling motion. It therefore stays in a closed orbit about the Earth, never falling altogether and never escaping altogether.
The Moon weighs 81 billion tons.
The moons of Mars are called Phobos and Deimos after two mythical horses that drew the chariot of Mars, the Roman god of war.
The most ancient report of a solar eclipse is in Chinese records. The eclipse came without warning, according to legend, because the royal astronomers, Hsi and Ho, were too drunk to make the necessary computations. They were executed – the only astronomers known to have been killed for dereliction of duty.
The most luminous star is probably Eta Carinae, which has a maximum luminosity of around 5,000,000 times that of the Sun
The multi-layered space suite worn by astronauts on the Apollo moon landings weighed 180 pounds on Earth and 30 pounds on the moon with the reduced lunar gravity.
The NASA Space Shuttles each contain more than 34,000 separate heat shielding tiles, each specifically cut for its own location. The heat dissipation process used in these tiles is so effective that the corners of tiles heated to 2,325 degrees F (1,275 degrees C) can be held by a bare hand while the interior glows red hot.
The nucleus of Halley's comet is a peanut-shaped object, weighing about 100,000 million tons, and measuring about 9 miles by 5 miles.
The planet Jupiter is named after the supreme god of the Romans. He was the god of the sky, the bringer of light, hurling lightning bolts down on the world when displeased.
The planet Pluto takes 248 Earth years to orbit the Sun. For 20 of those years, it is closer to the Sun than the planet Neptune. The nature of its orbit, however, always prevents it from colliding with Neptune.
The planet Saturn is named after the Roman god of seedtime and harvest.
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