Astronomers can usually spot "planet killer" asteroids long before they approach Earth. But what if they can't?

Most asteroid flybys pass millions of kilometers away from Earth, too distant to notice. But one upcoming encounter will be ...

NASA's Voyager 2 spacecraft captured dark streaks produced by geysers visible on the icy surface of Triton's south polar ...

Asteroid 2025 TF flew past Earth at an altitude similar to that of the International Space Station, but was not spotted by astronomers until hours after it was gone. Photo courtesy European Space ...

Oct. 8 (UPI) --International space agencies say an asteroid zipped by Earth closer than a large number of satellites currently in orbit, but was not detected until hours later. The European Space ...

Earth has a near miss—twice—after two small asteroids seemingly passed alarmingly close to the planet, less than two days apart, one of them going completely unnoticed until hours after it had already ...

An asteroid just flew closer to Earth than many satellites, according to space agencies. The space object, named 2025 TF, zoomed over Antarctica at a distance of just 265 miles above the Earth's ...

An asteroid was spotted whizzing past Earth last week in the second closest approach to the planet ever recorded, according to authorities. Asteroid 2025 TF soared over Antarctica just before 9 p.m.

Another asteroid zoomed near Earth's vicinity the next day. An asteroid just flew closer to Earth than many satellites, according to space agencies. The space object, named 2025 TF, zoomed over ...

Hubble captured a breathtaking view of NGC 6000, a spiral galaxy where blue newborn stars shine beside golden, aging ones. The image also reveals traces of ancient supernovae still glowing faintly ...

View post: REI's Wind and Water-Resistant Hiking Jacket Is Nearly $70 Off Right Now Astronomers say a recently-discovered asteroid nearly landed on Earth, and that it could have caused serious damage ...

A newly discovered asteroid just whizzed past Earth, marking the second-closest asteroid flyby on record, astronomers say. The asteroid flew over Antarctica just before 9 p.m. ET on Sept. 30, about ...