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What if aliens exist—but they're just hiding from us? The Dark Forest theory, explainedMay 23, 2024 – The chilling theory depicted in the Netflix series ‘3 Body Problem’ is just one explanation for our lack of encounters with extraterrestrial intelligence.
NASA has a plan to clean up space junk—but is going green enough?April 23, 2024 – Astronomers laud NASA's plan to protect the space environment, but the agency needs to act fast to make a difference.
Every 80 years, this star appears in the sky—see the once-in-a-lifetime phenomenonApril 17, 2024 – For a week between now and September, the rare recurrent nova T Coronae Borealis will flare bright enough to be a new star.
The Lyrid meteor shower happens once a year—and it’s about to peakApril 16, 2024 – One of the oldest annual showers on record, the Lyrids put on a show each spring. Here’s what to know about how to see it and where it came from.
The most iconic images in space history have been ‘remastered’. Here’s what they’ve revealedSeptember 02, 2022 – Andy Saunders is a go-to guy for restoring photographs that seem beyond hope. A new book reveals what happened when this British imaging specialist turned his hand to humanity's ultimate adventure.
NASA smashed an asteroid with a rocket. The debris could hit Mars.March 27, 2024 – A test to protect Earth from asteroids unleashed a swarm of boulders—and a new study suggests that there may be some unintended consequences.
How to watch a solar eclipse safelyApril 03, 2024 – Sun damage to eyes can happen in minutes, but effects might not be clear until hours later.
Inside the 124-year-old observatory that birthed modern astrophysicsMarch 26, 2024 – Home to the world’s largest refracting telescope, the Yerkes Observatory in Wisconsin was so influential that Albert Einstein insisted on visiting. Now you can too.
Do bats take flight during a solar eclipse? Here’s what we learned.April 08, 2024 – Certain animals have displayed unusual behavior when the moon crosses paths with the sun—but there are a lot of unknowns. The 2024 total solar eclipse provided some answers.
9 spectacular night sky events to see in 2024April 12, 2024 – The year is filled with wonders for stargazers, including a "devil" comet visible to the naked eye, prime-condition meteor showers, and a total solar eclipse.
What is a solar eclipse—and when is the next one?April 02, 2024 – Learn the difference between total and partial solar eclipses, how to be in the path of totality, and how to view one safely.
How did life on Earth begin? Here are 3 popular theories.March 08, 2024 – For millions of years, Earth was a hot and rocky planet. Scientists have some hypotheses on how life emerged amid such inhospitable terrain.
U.S. returns to the moon as NASA's Odysseus successfully touches downFebruary 22, 2024 – For the first time since 1972, an American mission has landed on the moon for NASA, the first steps in the possible commercialization of deep space.
Did Pluto ever actually stop being a planet? Experts debate.February 16, 2024 – It’s been 18 years since Pluto’s celestial status was called into question—yet the matter seems far from settled. We asked experts from both sides to make their case.
Saturn’s ‘Death Star’ moon was hiding a secret: an underground oceanFebruary 07, 2024 – Researchers say the unlikely discovery could help them better understand buried oceans on frozen moons — and maybe life beyond Earth.
Space Walk | Nat Geo Photo of the DayAstronaut Bruce McCandless II in 1984 became the first person to walk untethered in space, in this image from our photography archives.
