Why does asteroid Bennu eject gravel into space? No one is sure. The discovery, occurring during several episodes by NASA’s visiting ORISIS-REx spacecraft, was unexpected. Leading ejection hypotheses include impacts […]
Could there be life floating in the atmosphere of Venus? Although Earth’s planetary neighbor has a surface considered too extreme for any known lifeform, Venus’ upper atmosphere may be sufficiently […]
A rising moon can be a dramatic sight. A rising Full Corn Moon was captured early this month in time-lapse with a telephoto lens from nearly 30 kilometers away — […]
Are stars better appreciated for their art after they die? Actually, stars usually create their most artistic displays as they die. In the case of low-mass stars like our Sun […]
Mars reappears just beyond the Moon’s dark limb in this stack of sharp video frames captured on September 6. Of course to reappear it had to disappear in the first […]
A bright storm head with a long turbulent wake swims across Jupiter in these sharp telescopic images of the Solar System’s ruling gas giant. Captured on August 26, 28, and […]
Have you ever seen the Pleiades star cluster? Even if you have, you probably have never seen it as large and clear as this. Perhaps the most famous star cluster […]
How do black holes like this form? The two black holes that spiraled together to produce the gravitational wave event GW190521 were not only the most massive black holes ever […]
Where do land and sky converge? On every horizon — but in this case the path on the ground leads to St Michael’s Mount (Cornish: Karrek Loos yn Koos), a […]
This is the mess that is left when a star explodes. The Crab Nebula, the result of a supernova seen in 1054 AD, is filled with mysterious filaments. The filaments […]