npr.org / .npr-org-space / Page 2

SpaceX's Starship rocket took off again Tuesday for its sixth test flight. Crowds, including President-elect Donald Trump, gathered at the launch site in Texas to watch it fly part way around the world to the Indian Ocean. Starship - the largest ...

There are at least 19,000 pieces of space debris in Earth's orbit, not including active satellites, that the U.S is monitoring.

Regulators have slowed the pace of Starship launches over environmental concerns, but that may be about to change.

Scientists are reconsidering old information about Uranus. NPR's Scott Simon explains the problem with photos taken of the planet 38 years ago.

The next supermoon -- which appears larger and brighter than a regular full moon due to its proximity to Earth -- will not be visible for nearly a year.

A similar hearing last year brought extraordinary moments, including a retired intelligence officer alleging that the U.S. government has recovered nonhuman "biologics" from crash sites.

As global warming continues and space technology improves, there is more and more talk about the growing possibility of a sci-fi future in which humans become a multiplanetary species. Specifically, that we could live on Mars. Biologist Kelly ...

The North and South Taurids occur every year in September, October, and November. They may have originated from a comet that broke up about 10,000 years ago.

A pivotal week in Corey Gray's life began with a powwow in Alberta and culminated with a piece of history: The first-ever detection of gravitational waves from the collision of two neutron stars. Corey was on the graveyard shift at LIGO, the Laser .. ...

How did life start on Earth? The answer is a big scientific mystery scientists are actively investigating. After talking with many scientists, host Regina G. Barber found that an abundance of water on Earth is most likely key, in some way, to the ...