Every year, millions around the world switch off their lights for Earth Hour, often thinking of it as a gesture of ...

The Sydney Opera House, Gardens by the Bay in Singapore and the London Eye all briefly cut their lights for the yearly WWF ...

Just one hour at the shore of Lake Karachay would be enough to kill. The radioactive lake, located in the southern Ural Mountains in central Russia, was a dumping ground for nuclear waste from the ...

Learn more about the upcoming Lyrid meteor shower and how you can prepare for this stunning cosmic show.

Catch two transits of Io, spot sparkling star clusters, and view Mars at aphelion while the April Full Moon lights the sky this week.

With meteor showers and other celestial events lighting up the sky throughout April, astronomers predict an exciting month of ...

A British propulsion company is aiming to harness nuclear fusion and drastically cut travel times to far off places in space.

From the Lyrid meteor shower in April to the dazzling Geminids in December, you won't want to miss these cosmic light shows ...

The next full moon over Mississippi rises April 12. Know when to find dark skies to watch the Lyrids meteor shower this month, when to see more planets.

SpaceX sent another big batch of its Starlink internet satellites to orbit from Florida on Saturday night (April 5). A Falcon ...

Amazon is going into competition with SpaceX, with its Project Kuiper broadband satellite-based internet service intended to ...