Latest about Solar System
What is the moon phase today? Lunar phases 2026
Reference See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2026.
Pluto losing its planet status may be the best thing that ever happened to solar system diversity
Unpopular opinion time, Pluto being reclassified as a dwarf planet was a great thing for our understanding of the solar system and for the former planet, too.
Why do we care so much that Pluto isn't a planet?
Twenty years after Pluto became a dwarf planet, people are still fighting over its status. Experts explain why the debate feels so personal.
Satellite sees Greenland's most significant floating ice loss in over a decade | Space photo of the day for Aug. 24, 2026
A fractured "ice tongue" is visible in the imagery.
On this day in space! Aug. 24, 2006: Pluto loses its planet status
On Aug. 24, 2006, the International Astronomical Union (IAU) decided that Pluto wasn't a planet anymore.
It's been 20 years since Pluto lost planet status. Will it ever get its title back?
The reclassification of Pluto as a dwarf planet continues to stir up a hornet's nest of controversy and debate, as Space.com meets one astronomer who believes the decision to have been a mistake.
How a huge fleet of 17 spacecraft discovered something surprising about solar eruptions
Taking measurements of the same CME from different vantage points in the solar system revealed the true extent of a solar eruption.
Japan unveils Mars moon sample-return spacecraft ahead of Oct. 19 launch (photos)
Japan recently gave the world a look at the spacecraft of its MMX mission, which will launch on Oct. 19 to grab pieces of the Mars moon Phobos and haul them back to Earth.
