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Can black holes send information back in time?

Extremely curved spacetime can warp cause and effect, creating channels for backward communication

Disclosure Day and interspecies communication—alien language isn’t just weird noises

A linguist lays out what communicating with aliens could actually involve—and what that tells us about human language

Crowdsourcing could discover new meteor showers and more

Meteor camera networks can reveal the hidden history of the solar system, and you can assist from your own backyard

SpaceX IPO valuation depends on Starship and orbital AI data centers

Reusable rockets and Starlink made Elon Musk's company dominant in spaceflight. Its record valuation leans on making Starship flights routine and orbital AI data centers real

SpaceX’s historic IPO ignites the new space race

SpaceX's IPO—the largest in history—has out-of-this-world implications for AI, space commerce and extraterrestrial exploration

Steven Spielberg's Disclosure Day gets one major thing wrong about the search for aliens

The new movie Disclosure Day is all about a big, alien secret. But SETI researchers behind the updated post-detection protocol say they aren't in the business of secrets.

The 24 alien books Scientific American recommends

The 24 alien books the Scientific American staff love, from The Hitchhiker's Guide to the Galaxy to Contact and beyond

Renewable Groups Ask Courts to End Pentagon’s ‘Total Halt’ of Wind Power

BRAD PLUMER

More than 100 planned wind farms in 21 states are now stalled indefinitely as the Pentagon delays military reviews once seen as routine.

They Bought a Famous Puzzle in Cryptography. Now They’re Opening It Up.

JOHN SCHWARTZ

A San Francisco company paid nearly $1 million for the solution to an unsolved code in Kryptos, a sculpture on the C.I.A. grounds. Soon it will become an online challenge.

Neil Shubin on Trusted Science in a ‘Deeply Partisan Age’

CARL ZIMMER

An eminent fossil hunter takes the reins at the National Academy of Sciences in a turbulent moment for American researchers.

Earth’s permafrost could soon release hidden ‘deep carbon,’ supercharging warming

Melting permafrost is releasing carbon into the atmosphere, but scientists may have underestimated just how bad the situation may be, a new analysis finds

Former U.S. health official explains why the Trump administration ‘ignored’ a key alcohol study

A study finding that even one drink a day causes health risks was deliberately sidelined by the Trump administration, a former federal public health official alleges

NASA’s experimental quiet supersonic plane passes another critical milestone

NASA's X-59 research aircraft reached its target speed and altitude for the first time on Friday

NASA Leader Responds to Criticism Over All-Male Artemis III Crew

KENNETH CHANG

NASA’s missions these days rarely feature all-male crews. Jared Isaacman, its administrator, said women play prominent roles throughout the space agency.

Can the Artemis III Mission Go on as Planned?

KATRINA MILLER, MELANIE BENCOSME, JOEY SENDAYDIEGO, LAUREN PRUITT AND KENNETH CHANG

NASA has chosen four astronauts for the Artemis III mission, but there has been a major setback: the destruction of a Blue Origin rocket and its only launchpad. Our science reporter Katrina Miller describes what this event might mean for the U.S. goal of landing on the moon by 2028.