Astronomy Facts & Trivia - Page 3
The Earth is the densest planet in the solar system. Sciensational.com
The moon orbits the Earth every 27.32 days Sciensational.com
Every second, the Sun pumps more than a million tons of material into the space through the solar wind (electrically charged particles.) Sciensational.com
 The planet Venus does not tilt as it goes around the Sun, so consequently, it has no seasons. Sciensational.com
 Since Neptune's discovery in 1846, it has made just about three-quarters of one revolution around the Sun.
The pressure at the centre of the Earth is 27,000 tons per square inch. Sciensational.com
 Uranus is tipped on its side so that one pole is pointed at the Sun, so its poles are warmer than its equator.
The smallest planet in our solar system is Pluto (now called 'dwarf planet' and not a true planet.) Sciensational.com
 A cosmic year is the amount of time it takes the Sun to revolve around the center of the Milky Way, about 225 million years.
 A day on the planet Mercury is twice as long as its year. Mercury rotates very slowly but revolves around the Sun in slightly less than 88 days. Sciensational.com
 The star Alpha Herculis is so big that 25 of our entire solar system would have to be placed end to end to equal the star's diameter. Sciensational.com
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The star Sirius B is so dense, a handful of it weighs about 454,000 kgs (1 million pounds.) Sciensational.com
The Sun contains over 99.8 percent of the total material (mass) in our solar system, while Jupiter contains most of the rest.
The Sun is 330,330 times larger than Earth. Sciensational.com
The sun is about 149 million kms (93 million miles) from earth, yet it's 270,000 times closer than the next nearest star, which is 4.3 light years away. Sciensational.comSubmitted by: damandude - Missouri, United States
A neutron star is the strongest magnet in the universe.
A new star is born in our galaxy every 18 days. Sciensational.com
If a pulsar's (small star made up of densely packed neutrons) piece the size of a small coin landed on Earth, it would weigh approximately 100 million tons.
A day on Mercury, from sunrise to sunset, lasts about six Earth months. Sciensational.com
A space vehicle must move at a rate of at least 27.35km (17 miles) per second to escape Earth's gravity. Sciensational.com
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