Astronomers have discovered fresh evidence suggesting the possible existence of an unseen planet in the far reaches of our ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure ...

More than 50 times further from the Sun than Earth, the tiny dwarf planet Makemake is one of the last places you'd expect to ...

Astronomers have discovered 2017 OF21, a distant dwarf planet candidate located about 90 times farther from the Sun than ...

Scientists have discovered methane gas on the dwarf planet Makemake, a finding that has surprised astronomers studying the outer solar system.

Astronomers have discovered the remains of an icy, water-rich world being swallowed by a white dwarf star outside our solar ...

"It shows that Makemake is not an inactive remnant of the outer solar system, but a dynamic body where methane ice is still ...

University of Warwick astronomers have uncovered the chemical fingerprint of a frozen, water-rich planetary fragment being ...

Astronomers using the Hubble Space Telescope have observed a white dwarf - a highly compact stellar ember - that appears to ...