Posts Tagged ‘gravity’



What Will You Do With Your “Leap Second”?

June 30 will be the longest day in three years, because you’ll get one extra second in your day—a leap second. The International Earth Rotation and Reference Systems Service adds a leap second every few years to keep the clocks we use to measure official time and the speed of Earth’s rotation in sync. The addition […]

Huge Asteroid Headed For Close Encounter With Earth

A huge asteroid will pass closer to Earth than the moon Tuesday, giving scientists a rare chance for study without having to go through the time and expense of launching a probe, officials said. Earth’s close encounter with Asteroid 2005 YU 55 will occur at 6:28 p.m. EST Tuesday, as the space rock sails about […]