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.

Astronomers using the Hubble Telescope found that the region around a quasar's black hole pushes out material at a few percent the speed of light. These quasar tsunamis wreak havoc on the galaxies in which the quasars live.

The origin of digits in land vertebrates is hotly debated, but a new study suggests that human hands likely evolved from the fins of Elpistostege, a fish that lived more than 380 million years ago.

With no vaccines or treatments, the fight against coronavirus comes down to this behavioral technique. A physician explains how it works.

It's OK to feed wild birds. Here are some tips for doing it the right way from a wildlife ecologist.