A podcast featuring Harvard theoretical physicist Avi Loeb, on the subject of whether 'Oumuamua - the strange object that swept through our solar system in 2017 - is an artifact of an alien intelligence.

Climatologists at NOAA have released updated climate "normals." They explain what "normal" means, how our U.S. climate normals have changed, and how to best make sense of them.

Some areas of the United States are starting to report the emergence of the Brood X cicadas after their 17-year absence.

If humanity wants to travel between stars, people are going to need to travel faster than the fastest-moving stuff known in our universe: light. New research suggests that it might be possible to build warp drives and beat the galactic speed limit.

The Chinese Tianwen-1 mission’s Zhurong rover will attempt to land on the surface of Mars in mid-May 2021.

The first of 2 spring supermoons in 2021 took place on April 26 or 27 (depending on your location on Earth). We received many wonderful submissions from you, our readers. Here's a gallery of some favorites. Thanks to all who submitted!

The April 2021 supermoon and the lunar nodal cycle, explained.

Follow the action as asteroid scientists, space agencies and civil protection organizations participate in a drill - simulating an asteroid impact about to happen - during this week's virtual Planetary Defense Conference.

From nuclear weapons to biowarfare to cyberattacks, humanity has much to overcome. Martin Rees and Frederick Lamb discuss the obstacles we must face as we look forward to humanity's future on Earth.

Take 3 minutes to watch a feel-good video of a team of responders saving a humpback whale in distress.