Space

Space

The Earth-bound asteroid scientists saw coming

History-making asteroid tracked from space to its fiery demise in an African desert.

Space

The most popular stars

Dwarf stars come in many colors, and aren't so small after all

Space

Deep-space dancers

In a galaxy far, far away, black holes are spinning around each other.

Space

Watching deep-space fireworks

An orbiting telescope records the universe’s most powerful explosions.

Planets

Either Martians or Mars has gas

Martian methane points to possible life on the Red Planet.

Space

Meteorites may have sparked life on Earth

A collision of extraterrestrial objects and Earth’s ancient oceans could have produced raw materials for life.

Space

Speedy stars

A gang of stars on the edge of our galaxy is running away.

Space

Galaxies on the go

Millions of stars are mysteriously racing toward one point in the sky.

Planets

A new look at Saturn’s rings

New information from space missions suggests Saturn's rings may be older and have more mass than scientists thought.

Planets

Explainer: What is a planet?

Over the years, definitions have changed several times.

Planets

The trouble with Pluto

The traditional view of the solar system is out of date. Depending on who you talk to today, the answer to how many planets there are could be eight, 12, or even 208 and counting.

Space

The solar system’s biggest junkyard

The science of tracking millions of pieces of garbage that orbit Earth is tricky and essential.