Looking back

By studying distant galaxies, we can test and refine our theories of star formation

Red surprise

Dazzling rays

Tracing cosmic rays

New additions!

Mission to Mars

Planetary escorts

Starry picture

After it all began

Scientists replicate conditions moments after the Big Bang

Life on Europa

Martian visitor?

Planet watch

A measure of the dark force

A simple technique of checking out supernovae

Titanic winds

Winds blow on Titan

Constant defined

The Hubble constant, which helps determine the Universe's age, is calculated

Planets of Orion hunted down

The constellation is made up of planet-like bodies

Martian research

Life on Mars may have gone undetected by earlier probes

Green emissions from Venus

Defying logic

The mystery behind runaway stars

No more sweet sixteen

Earth is 30 million years older than originally estimated by researchers

Long-distance sighting

Farthest galaxy pushes back dark ages of universe

Water on Mars?

It's an old, old planet

Mapping the sky

The lunar indicator