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The EarthSky team has a blast bringing you daily updates on your cosmos and world. We love your photos and welcome your news tips. Earth, Space, Human World, Tonight.
If Rigel were as close as our sun, it would outshine the sun by 40,000 times!
On February 20, 1962, John Glenn became the 1st American to orbit Earth and the first American space hero.
Betelgeuse’s red color indicates a star well into the autumn of its years. In fact, the star is a magnificently rare red supergiant.
At a very steady rate, unstable carbon-14 gradually decays to carbon-12. The ratio of these carbon isotopes reveals the ages of some of Earth’s oldest inhabitants.
Theoretical studies predict 100 million to 1 billion black holes in our Milky Way galaxy. So far, astronomers have found about 60. A serendipitous discovery could lead to finding more.
This year, in 2017, there are 12 full moons and 12 new moons, but only four eclipses – two lunar and two solar.
We can’t feel Earth’s rotation or spin because we’re all moving with it, at the same constant speed.
Groundhog Day is tied to the movement of Earth around the sun. It’s the year’s first “cross-quarter” day.
Are you a February baby? Here’s some cool info about your birthstone, the amethyst. Plus pics!
The International Astronomical Union issued a statement on Monday in response to the U.S. executive order limiting travel from 7 countries. Read it here.
See the Double Cluster in Perseus