XR flew about 1.37 million miles (2.2M km) away from Earth. The space rock is estimated to be about 300-700 km (248-434 miles ...

Many biological molecules are chiral, meaning they exist in two forms that are mirror images of each other, like left and ...

According to experts at the University of Oxford, the planet known as HD 20794 d has a mass six times greater than Earth's ...

The 184-foot-tall (56-meter) rocket lifted off from Kourou, French Guiana, at 11:24 am EST (16:24 UTC). Twin solid-fueled boosters and a hydrogen-fueled core stage engine powered the Ariane 6 through ...

YR4, initially raising impact concerns, is confirmed safe for Earth after precise observations by the Subaru Telescope. Early ...

Asteroid 2024 YR4 poses a potential risk to the Moon, with a 1.7% chance of collision despite Earth now being safe. If it ...

It's a new type of three-body problem for astronomers, who used the Hubble Space Telescope to determine that twin asteroids ...

ESA’s Hera mission is two-year flight to the Didymos binary asteroid system. See its trajectory here. Credit: ESA - European Space Agency ...

For a brief moment, asteroid 2024 YR4 had scientists on edge, with its impact probability climbing as high as 2.8%—enough to capture global attention. But thanks to rapid observations and advanced ...

Firefly Aerospace’s Blue Ghost planned to work for 14 days, should be useful for years thanks to its reflector that improves ...