2 spiral galaxy NGC 3393 hosts the nearest known pair of supermassive black holes Posted on Feb 16, 2021Feb 15, 2021 by Tyler Finck source
2 The fastest-spinning neutron star known is PSR J1748-2446ad and rotates at a rate of 716 times a second Posted on Jun 29, 2017Jun 27, 2017 by Tyler Finck source
2 The planet Mercury has an orbital period around the Sun of 88 days, the shortest of all the planets in our Solar System Posted on Apr 21, 2017Apr 20, 2017 by Tyler Finck source
2 The Sun orbits around the center of our Milky Way galaxy once every 240 million years Posted on Mar 21, 2016Mar 21, 2016 by Tyler Finck source
2 A moonquake is the lunar equivalent of an earthquake Posted on Mar 10, 2016Mar 7, 2016 by Tyler Finck source
2 Surrounding Jupiter’s core is an ocean of liquid hydrogen about 1,000 kilometers deep Posted on Feb 18, 2016Feb 15, 2016 by Tyler Finck source
2 It takes Neptune 164.8 Earth years to orbit the Sun Posted on Jan 28, 2016Apr 23, 2017 by Tyler Finck source
2 On a clear night with no moon and little light pollution, a person with very good eyesight may be able to see 2000-2500 stars Posted on Oct 21, 2015Oct 19, 2015 by Allison usavage source
2 The highest mountain in the known universe is Olympus Mons, a giant volcano on Mars, over 15 miles tall Posted on Oct 17, 2015Oct 14, 2015 by Allison usavage source
2 Jupiter’s moon Ganymede has its own magnetic field and is larger than the planet Mercury Posted on Oct 15, 2015Oct 12, 2015 by Allison usavage source