Astronomy Facts & Trivia - Page 3The star Sirius B is so dense, a handful of it weighs about 454,000 kgs (1 million pounds.) The Sun contains over 99.8 percent of the total material (mass) in our solar system, while Jupiter contains most of the rest. Sciensational.com The Sun is 330,330 times larger than Earth. 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.com 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 space vehicle must move at a rate of at least 27.35km (17 miles) per second to escape Earth's gravity. The Sun loses 360 million tonnes of material each day. Sciensational.com |
The Earth-Moon size ratio is the largest in our solar system, excepting Pluto-Charon. The Sun travels at a speed of 250km (155 miles) per second, but it still takes 230 million years for it to complete a single revolution of the galaxy. Sciensational.com Olympus Mons on Mars is the largest volcano in our solar system, almost three times taller than Mount Everest on Earth. Jupiter's core is non-metal, but due to the immense pressure inside Jupiter, the core has become a metal. This metal is liquid metallic hydrogen. The cosmos contains approximately 50,000,000,000 galaxies. Sound travels about 4 times faster in water than in air. A large sunspot can last for about a week. The Earth orbits the sun at an average speed of 107,220 kms per hour. There is a high and low tide because of our moon and the Sun. The moon is one million times drier than the Gobi Desert. |
A day on Mercury, from sunrise to sunset, lasts about six Earth months.