Today is the 50th anniversary of Earth Day, which catalyzed action to protect the environment, not just in the US but internationally.

The NASA Curiosity mission team is keeping the rover moving and working on the surface of Mars while they #stayathome. Find out how they’re managing it.

Click here for links to activities for International Dark Sky Week, April 19 to 26, 2020.

Fascinating video! Tour the International Space Station with ESA astronaut Luca Parmitano and NASA astronaut Drew Morgan. Shot in one take with two cameras strapped together.

Re-creation of moon views seen by Apollo 13 astronauts 50 years ago, on their somber passage around the moon's far side.

How the coronavirus infects and how it makes people sick.

BepiColombo - a joint mission of Europe and Japan - successfully passed Earth last night and is now headed toward the innermost part of the solar system. Here are some questions about our sun's innermost planet, Mercury, the spacecraft is expected to answer.

With water dropping 150 meters (490 feet) through a thick patch of cloud forest, San Rafael Waterfall was one of Ecuador's most captivating landscapes and attracted tens of thousands of visitors per year. But on February 2, the water stopped flowing.

This newly discovered fossil is a hugely important find, say scientists. It means that one of our earliest ancestors possibly originated in southern Africa. Read more

Behind every government announcement, there is an army of epidemiologists predicting how the virus will spread, and how to beat it. Note that this story doesn't deal specifically with the University of Washington models released April 5, projecting U.S. infections and deaths from COVID-19 in the coming months. But it does provide insights into how scientists create models.