But Earth's rotation has been slowing due to tidal interactions with the Moon, meaning that days were considerably shorter in ...

Nielsen celebrated volunteerism and environmental action by recognizing our first-ever Global Volunteer Month, culminating in ...

Five asteroids will pass Earth in the days before International Asteroid Day on Sunday. But don’t worry — scientists say none ...

June 30 marks Asteroid Day, a holiday observed annually to reflect on the prospect of a planet-destroying space rock striking ...

Scientists predict each day on Earth will be as long as 25 hours, although a million years from now. A day longer than the ...

An afterschool club in partnership with the Smithsonian and the World Wildlife Fund aims to build environmental leadership ...

Called 2024 MK, the space rock will make its closest approach to Earth Saturday morning, passing by at about three-quarters ...

The United Nations has designated June 30 as International Asteroid Day. That’s the date of the ... the closest asteroids to plunge past planet Earth this year. The other is an unexpected ...

Thursday afternoon the asteroid will fly past Earth at about 58,000 mph. According to Live Science, the asteroid is ...

Jupiter can deflect previously safe asteroids inwards towards Earth, so understanding this process is important.” The elliptical, three-year (1130 day) orbit takes 2011 UL21 above the plane of ...

Take a look at our favorite space pictures here, and if you're wondering what happened to today in space history don't miss our On This Day in Space ... a brightly shining Earth in stunning ...