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

Researchers suggest Earth’s space signals could reveal our presence to alien civilisations, especially during planetary ...

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

Pluto is a bit of a loner. The dwarf planet is no longer considered a regular planet; it does not orbit on the same plane as ...

NASA's Hubble Space Telescope detected material from a Pluto-like body spiraling into a white dwarf star 260 light-years away ...

TRAPPIST-1e shows no signs of its first atmosphere, but hints of a secondary one remain. Liquid water could still be possible ...

To tell a Mars rover to turn left or an orbiter to change focus, mission scientists have to beam powerful transmissions ...

Astronomers predict it will pass relatively close to four planets (but not Earth) and the Sun, then continue its cosmic ...

Since astronomers found the first planets outside our solar system in 1992 and the first planet around a sunlike star in 1995 ...

Objects like 3I/ATLAS could become the "seeds" of giant planets after being captured in the discs of dust and gas surrounding ...

Several well-known meteorite discoveries are still a mystery. Avi Loeb’s interpretation of some meteorite debris possibly being of alien origin is controversial, because peer‑reviewed analyses point ...

Hubble has captured a dense, burned-out star in the act of consuming a Pluto-like object. Happening some 260 light years from Earth, the new observation, published in the Monthly Notices of the Royal ...