Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren’t sure has dropped by two-thirds. The reasons why, experts say, are complicated.
While online conspiracies swirl, comet 3I/ATLAS made a close pass by Earth on Dec. 19, giving astronomers a rare glimpse of a fascinating object as it leaves forever.
NASA’s Europa Clipper spacecraft has observed interstellar comet 3I/ATLAS, collecting rare data as the ancient object made its closest approach to Earth.

SpaceX says it has lost control of a Starlink satellite that’s now falling back to Earth after suffering an anomaly. The sudden loss of communications, drop in altitude, “venting of the propulsion tank,” and “release of a small number of trackable low relative velocity objects,” suggests the anomaly was some kind of explosion. SpaceX says […]
Jupiter and Sirius shine side by side in the southeast tonight, mimicking the mythical “Christmas Star” story. Here’s exactly when and where to look.
What is the National Center for Atmospheric Research (NCAR) and why does it matter to you?
Growth rarely happens in front of our eyes and almost never feels positive in the moment. Here are five different ways in which you unknowingly grew this year.
The humble planarian flatworm can regrow its brain. Here’s how this tiny animal will have you rethinking everything you thought you knew about memory.
Colorado team develop a new form of silicone that is more transparent than window glass, and a better thermal insulator than materials used to construct walls.
The holiday season brings with it merriment, togetherness, celebrations and the pressure to keep up with it. Here are five reasons why the holidays keep you up at night.