Cancer the Crab is famous, but faint. You likely won't see it tonight, in the moon's glare. But you'll see bright stars around it, and they can guide you to Cancer when the moon moves away.
On April 10, in coordinated press conferences across the globe, researchers unveiled a history-making image - the 1st ever - of the "shadow" of a supermassive black hole.
There are 110 Messier objects. They are some of the sky's most beautiful nebulae, star clusters, galaxies, from a list originally published by Charles Messier in 1774. During a Messier Marathon, stargazers with telescopes try to find as many in one night as they can.
Solar physicists predict another weak 11-year solar cycle ahead. At the same time, they expect the coming cycle to break the trend of weakening solar activity seen over the past 4 cycles, and they add there's "no indication we are currently approaching a Maunder-type minimum in solar activity."
You can expect meteor activity to increase in the coming months, as we re-enter a time of year for major meteor showers. Here's what appears to be a random meteor, but a very bright one!
The star is a white dwarf, a cool, dead, dense star like our sun some 6 billion years from now. The planet fragment - made of heavy metals - survived a system-wide cataclysm that followed the star's death.
Deborah Byrd (asteroid 3505 Byrd) helps edit EarthSky.org and is a frequent host of EarthSky videos. Deborah created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Prior to that, she had worked for the University of Texas McDonald Observatory since 1976, and created and produced their Star Date radio series. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named in her honor in 1990, a Public Service Award from the National Science Board in 2003, and the Education Prize from the American Astronomical Society in 2020. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.