The rising count of gravitational-wave events is giving us a new look at a once-invisible population of black holes.
Richard Wright explains the importance of linearity — a measure of how a detector accumulates lights — in getting the most from your space images.
Learn how chase away the Moon to keep Comet 46P/Wirtanen in a dark sky. Here's an update on the comet's progress and what to look for in the coming nights.
Move over 46P/Wirtanen, it's time for the Geminids, the richest meteor shower of the year.
China's latest lunar mission will drop a lander and rover in one of the oldest terrains on the Moon, becoming the first craft to intentionally land on and explore the farside.
Want to find Neptune the easy way? Just point your binoculars or telescope at Mars the next few nights, when the two planets will be in close conjunction.
An art sculpture achieves orbit, 46P/Wirtanen becomes a naked-eye comet, and C/2018 V1 makes one last good pass.
NASA's ambitious Osiris-REX mission will now spend the next couple years surveying Bennu before attempting to return a sample to Earth.
In David Grinspoon's latest column, he discusses how, for both Venus and Earth, life's last refuge might lie in the clouds.
A new supernova in the bright galaxy M77 in Cetus is within range of amateur telescopes. Here's how to find it.
We still don't know for sure if anyone saw the supernova explosion in Cassiopeia around 1680, but there's no question we can observe what remains of it today.
After a safe landing, NASA's first dedicated geophysical mission to Mars will spend the next two years studying the deep interior of the Red Planet.
This week, we give thanks for all the good things in life including a rare event — a full Moon on Thanksgiving. Make it your dessert after the big meal.
NASA's next Mars rover will explore a geologically diverse crater that may once have been flooded with water, a crucial ingredient for the mission's search for evidence of past life.
Do star clusters form all at once or over several generations? A team of astronomers finds an answer among the spinning stars of an amateur favorite, the Wild Duck Cluster.
Exoplanets pepper the night sky. We may not be able to observe them directly, but we can use their host stars as surrogates to envision them in our mind's eye.
Telesope magnification is much more complex than it might seem at first glance.
Arizona comet hunter Don Machholz did it again! He discovered his 12th comet only two mornings ago. Set your alarm, grab your scope, and take a look.
Comets, meteors, and Moon: Share the night sights that are coming our way!
Astronomers have detected three flares from near our galaxy’s central black hole that look like gas closely orbiting the unseen object.
Off-kilter, curved, and otherwise unusual beams of plasma from galaxies’ cores might track the dueling dances of two supermassive black holes.
After 11 Years, NASA's Dawn mission to explore Vesta and Ceres is about to come to an end.
NASA's planet-hunting telescope has run out of fuel after a nine-year mission that found more than 2,600 planets orbiting other stars along with thousands more worlds yet to be confirmed.
In the Halloween spirit, we pay a visit to the cosmic dead, those tiny stars that should just fade away but always seem to be causing trouble instead.
James Webb is an astronomer who is not only an expert on blazars but also an accomplished singer-songwriter, exploring his love of astronomy through music.