With virtually no atmosphere on the moon - and, therefore, no wind - flags that fly freely on Earth would hang like limp cloth in the lunar environment. So Apollo 11 engineers had to rethink flagpole design entirely.
How do solar and lunar eclipses influence animal behavior? While the human world gathers to see tonight's lunar eclipse, what's the rest of nature doing?
A new study, which used declassified images from spy satellites, shows that glaciers in the Himalayas melted twice as fast from 2000 to 2016 as they did from 1975 to 2000.
No, it’s not pseudoscience. Does a regular alignment of planets make a strong-enough tug to regulate the sun’s 11- and 22-year cycles? Read more in this story via Eos - a source for news and perspectives about Earth and space science - from the American Geophysical Union.
Scientists say increased carbon dioxide (CO2) in Earth's atmosphere is causing global temperatures to warm - sea levels to rise - and storms, droughts, floods and fires to become more severe. Here are 6 things about CO2 you might not know.
The American Astronomical Society - chief organization for US astronomers - said it is in conversations with SpaceX about the impending launch of 12,000 Starlink satellites. The astronomers worry the satellites will interfere with their work of understanding the universe.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.