It started, as many cosmic enigmas do, with a dim dot of light on a Hubble Space Telescope photo the sort that professional ...

Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is ...

Scientists have detected methane gas glowing faintly above Makemake, an icy dwarf planet smaller and farther than Pluto in space. Until now, Pluto was the only object that far out in the solar system ...

Astronomers using the Hubble Space Telescope have uncovered the remains of a frozen, Pluto-like world being devoured by a distant white dwarf star.

Space probe isn't done after historic Pluto flyby. — -- New Horizons conserved energy by taking naps on its 3 billion mile journey to Pluto but the spacecraft isn't done yet and may have enough ...

CC0 Usage Conditions ApplyClick for more information. The Solar System contains many small, unexplored worlds in a vast region of space beyond Neptune and Pluto. Recent discoveries include dwarf ...

Beyond Pluto -- So others can follow -- These old walls -- Stars that move and fade -- To watch them dance -- Our star, our sun -- Seek and destroy -- Telescope wars ...