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Opposition: A definition for stargazers
Opposition is a great time for stargazers to observe an object such as an outer planet because it rises at sunset, sets at sunrise, and is visible all night.
January 15, 2022
Huge Local Bubble drives formation of new stars
Our Local Bubble, a relative void in space filled with stars (but not much gas), was blown out by supernovae millions of years ago.
January 14, 2022
Dying star’s explosive end seen by astronomers
For the first time, a dying star's explosive end has been caught as it happened. Two telescopes in Hawaii witnessed the event.
January 14, 2022
Our Milky Way’s central black hole flashes unpredictably
Our Milky Way's central black hole flares unpredictably, both day to day and also over the long term. Astronomers want to know why.
January 13, 2022
1 of every 15 lights in the sky will be a satellite
Soon, 1 of every 15 lights in the night sky is going to be a satellite. Is the cost worth the gain, asks astronomer Samantha Lawler.
January 13, 2022
Millipede fossil shows they were once as big as cars
Scientists recently announced the discovery of a large millipede fossil that shows the creatures were once as long as 9 feet (nearly 3 meters).
January 12, 2022
Moon and bright stars on January 12, 13 and 14
Look for the moon and bright stars on the evenings of January 12 to 14. You'll see the Pleiades and Aldebaran close by the waxing moon.
January 12, 2022
After the Boulder fire, a corona around the sun
Corona around the sun, caused by thin clouds in front of the sun, or perhaps pollen, after the devastating Marshall Fire in Boulder County, early January 2022.
January 12, 2022
Video: Shielded versus unshielded lighting
A new video gives a dramatic demonstration of shielded versus unshielded lighting. Remember to buy outdoor lighting that preserves our night skies.
January 12, 2022
Can we – should we – send life to the nearest star?
A team of researchers has studied what's needed to send life to the nearest star. They envision small creatures riding tiny spacecraft to Proxima Centauri.
January 11, 2022
