We Should Be Looking for Small, Hot Dyson Spheres
A new study recommends looking for Dyson Spheres that are smaller, orbit closer to their suns, and might still be…
Curiosity Has Spent Three Years Trying to Reach This Spot on Mars
About three billion years ago, rushing water on Mars carried mud and boulders down a steep slope and deposited them…
First Contact Could Turn Out Well for Humanity
Most science fiction portrays the first contact between humanity and alien civilizations as a disaster. That's probably because our history…
Introducing Magic: Analog Sky’s New 3D Printed Binoculars for Astronomy
A new project promises to bring back the magic to night sky observing.
The Race to Find the Farthest Galaxy Continues
The very early Universe was a busy place, particularly when stars and galaxies began to form. Astronomers eagerly search for…
Galaxies Breathe Gas, and When They Stop, No More Stars Form
For most of the history of astronomy, all we could see were stars. We could see them individually, in clusters,…
Polar Ring Galaxies Are Bizarre and Rare. Astronomers Just Found Two More
Many galaxies resemble the Milky Way, with billions of stars organized into a rotating, rotating spiral. There are other irregular…
Spacecraft Could be Equipped With Tiny Thrusters That Use Water for Propellant
Engineers working with the European Space Agency have developed a new thruster design smaller than the tip of your finger.…
A Collision Between Gigantic Galaxy Clusters. Too Big, Too Early
Just when cosmologists have a workable theory for when and how galaxy collisions happened in the early Universe, something challenges…
An Ambitious New Technology Might be Needed to See Other Earths
NASA and its partners are starting to develop plans for the Habitable Worlds Observatory flagship mission that's due to launch…