Photosynthesis changed Earth in powerful ways. When photosynthetic organisms appeared, it led to the Great Oxygenation Event.

What is a brown dwarf star? These formations often defy classification, blurring the line between planets and stars.

For observers in India, Neptune will be visible throughout most of the night on September 20-21, rising in the east just as ...

A roundup of the day’s news including local astronomers working with Nasa to find out more about dwarf planet Pluto.

If you are going to look for intelligent life beyond Earth, there are few better candidates than the TRAPPIST-1 star system.

A planet swings in front of its star, dimming the starlight we see. Events like these, called transits, provide us with ...