The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...

On the side of the Sun facing Earth, a giant coronal hole appeared in the shape of an enormous love heart, many times the ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

This invisible boundary is known as the heliosphere. It's the endpoint beyond which our Sun does not have any reach or power.

By 2015, NASA announced that Kepler had discovered its 1,000th exoplanet. 2016 was a banner year for exoplanet detections with nearly 1,500 in that year alone. The total number reached 5,000 in March ...

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

NASA says its Hubble Space Telescope has detected a white dwarf star that consumed fragments of a Pluto-like object. Space ...

The official number of planets outside our solar system has reached 6,000, according to space scientists. NASA's tally of ...

The Kuiper Belt is loosely defined as a doughnut-shaped swath of space beginning just beyond the orbit of Neptune and ...

That may be about to change: NASA is preparing a brand new mission that will travel 1 million miles away from Earth in order to map the boundaries of the heliosphere, offering clues to scientists ...

Importantly, the 6,000 figure is continuously updated as astronomers around the world confirm new planets, meaning no single planet is officially the 6,000th.

Astronomers are racing to study 3I/ATLAS, an interstellar comet whose strange behavior reveals new clues about how other ...