How the coronavirus infects and how it makes people sick.

2020 has been an exciting year so far for SETI - the search for extraterrestrial life - in terms of new technological developments and strategies.

A new study of unusual ripples on Pluto's far side add to the evidence for a subsurface ocean on this distant and cold dwarf planet.

Satellite data show drop in air pollution over the major metropolitan areas of the U. S. Northeast.

Before daybreak these next several mornings - April 14, 15 and 16, 2020 - watch for the moon to sweep near Mars, Saturn and Jupiter. All 3 planets are bright and easy to spot. They make a little line in the predaw sky.

Gianluca Masi in Rome wrote: "Comet C/2019 Y4 ATLAS, the one we were hoping to see putting on a great show, has shattered both its and our hearts. Its nucleus disintegrated and Saturday night I could see 3, possibly 4, main fragments."

A temperate rainforest once flourished in Western Antarctica, just 560 miles from the South Pole, 90 million years ago.

Colombia University's Earth Institute in New York and host Andrew Revkin bring you a Sunday morning online session featuring musicians and experts in human sustainability on planet Earth.

Anak Krakatau (Child of Krakatau) volcano began erupting last night - Friday, April 10, 2020 - according to clocks in Indonesia. The eruption is not thought to be major, although it's the longest eruption since 2018. Webcams and satellites caught its awesome beauty.

Best seen in west after sunset from N. Hemisphere, east before dawn from S. Hemisphere. Northerners ... watch for stars of Taurus behind this mysterious pyramid of light.