Incredible color-changing! How – and why – the octopus, squid, and cuttlefish change color.
Hundreds of events – films, concerts, panels with engineers, scientists and astronauts – about asteroids and how to protect our planet from asteroid impacts.
The first map shows all the known asteroids within one-third of Earth’s distance from the sun today – Asteroid Day – June 30, 2016. Look below for a second map.
Asteroids in Earth's neighborhood of the solar system today, via Armagh Observatory.
On June 30, 1908, an explosion over Siberia killed reindeer and flattened trees. But no crater was ever found. It may have been a small asteroid.
Fallen trees at Tunguska. This image is from 1927, when Russian scientists were finally able to get to the scene. Photograph from the Soviet Academy of Science 1927 expedition led by Leonid Kulik.
Sign up to trigger asteroid observations on a global telescope network on Asteroid Day, June 30. Anyone can help! Sign up by 00:00 UTC on July 1.
Image via Las Cumbres Observatory
A waning crescent moon is sometimes called an old moon. It’s seen in the east before dawn.
Oceanic manta rays have long been thought to migrate great distances. But Indo-Pacific mantas, at least, are more local commuters than long-distance travelers.
Lead study author Josh Stewart follows a giant oceanic manta ray at Bahia de Banderas off mainland Pacific Mexico. Image via Scripps Oceanography/ Octavio Aburto/ PBS
Juno spacecraft on approach to Jupiter! The craft will arrive at Jupiter on July 4, first spacecraft to orbit the giant planet since Galileo (1995-2003).
2016 will be a great year for watching meteors in late July and early August. A dark sky is best … peak time is late night to dawn.
Taken during the 2015 Perseid meteor shower in August - at Mount Rainier National Park - by Matt Dieterich. He calls the photo 'Skyfall.'