Why Some People Believe the ‘Black Knight’ Satellite Is an Alien Spacecraft

Some believe it's an extraterrestrial spacecraft. NASA says it's probably just space junk. Here are the facts.

View in Browser  SHOP EXCLUSIVE SUBSCRIBE Why Some People Believe the 'Black Knight' Satellite Is an Alien Spacecraft Some believe it's an extraterrestrial spacecraft. NASA says it's probably just space junk. Here are the facts. Read More Archaeologists Followed a Sketch by Leonardo da Vinci. It Led to Secret Tunnels Under an Ancient Castle. The ancient mystery needed a bit of high-tech help to come to light Read More Critics Shot Down A Major 'Dark Oxygen' Discovery. Experts Are Trying to Prove Them Wrong. A 2024 study is facing skepticism, so the people behind that study are diving back underwater. Read More Scientists Found Mysterious Sources of 'Killer Electrons' 100,000 Miles Away from Earth Space travel just got a lot more complicated. Read More Human Thought Has a Speed Limit. Scientists Just Found It. You might be surprised by the number. Read More These Are the Best Portable Power Stations for Outings and Outages Be prepared for unexpected power failures and off-the-grid camping trips. Read More Need Assistance? Contact Us. Follow Us Unsubscribe | Privacy Notice | CA Notice at Collection Popular Mechanics is a publication of Hearst Magazines. ©2025 Hearst Magazine Media, Inc. All Rights Reserved. This email was sent by Hearst Magazines, 300 West 57th Street, New York, NY 10019-3779