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Top EarthSky News

New interstellar comet will keep a safe distance from Earth, NASA says

NASA · United States

New interstellar comet will keep a safe distance from Earth, NASA says

57% Center coverage: 30 sources

NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a comet from another star system.See the Story

Researchers Claim Earth, Milky Way Are Trapped in Cosmic Void

Researchers Claim Earth, Milky Way Are Trapped in Cosmic Void

70% Center coverage: 20 sources

Fresh evidence claims that the Earth and the surrounding galaxy are suspended inside a cosmic void based on echoes from the Big Bang.See the Story

Aliens 200 Light-Years Away Could Detect Our Airports, Scientists Say

Aliens 200 Light-Years Away Could Detect Our Airports, Scientists Say

57% Center coverage: 7 sources

Airport and military radar signals could reveal Earth to alien civilizations up to 200 light-years away, says a study by the University of Manchester.See the Story

The Milky Way Could Be Teeming with More Satellite Galaxies than Previously Thought

100% Center coverage: 5 sources

The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, according to new research. Cosmologists at Durham University used a new technique combining the highest-resolution supercomputer simulations that exist, alongside novel mathematical modeling, to predict the existence of missing "orphan" galaxies.Science · Durham See the Story

Massive boulders ejected during DART mission may complicate future asteroid deflection efforts

57% Center coverage: 7 sources

When NASA's DART spacecraft slammed into the asteroid moon Dimorphos in September 2022, it didn't just change the asteroid's orbit as intended—it unleashed a massive barrage of boulders that carried more than three times the momentum of the spacecraft itself.Space See the Story

The Omega nebula is a star-forming region

View at EarthSky Community Photos. | Tameem Altameemi of United Arab Emirates imaged this on June 28, 2025, and wrote: “This image showcases the Omega nebula (Messier 17) in stunning detail. Known as the Swan or Lobster nebula, M17 is a massive region of active star formation located in the constellation Sagittarius, about 5,500 light-years away. This deep exposure brings out the emission regions and the surrounding wisps of interstellar gas.” T…United Arab Emirates · United Arab Emirates Read Article

What are hole-punch clouds, aka fallstreak holes?

View at EarthSky Community Photos. | Peter Gipson in Suffolk, UK, caught this unusual cloud formation on July 1, 2025. Thanks, Peter! This is a hole-punch cloud or fallstreak hole. Read more about how hole-punch clouds occur below. Fallstreak holes or hole-punch clouds You’ve surely seen many clouds in the sky. But jets can cause a different type of cloud feature, called hole-punch clouds, aka fallstreak holes. They look like abrupt clearings in…Suffolk, England · Suffolk Read Article

Small planets are common around small stars, says new study

Artist’s illustration of a super-Earth exoplanet close to its red dwarf star. A new study showed that small planets with masses similar to Earth are especially common around red dwarf stars. Image via C. Lionel/ University of Liège. Used with permission. Exoplanets with masses similar to Earth are common in our galaxy. These planets are especially common around low-mass stars such as red dwarfs, researchers in Germany said in a new study. Could…Space · Heidelberg Read Article

The Northern Cross: Find the backbone of the Milky Way

View at EarthSky Community Photos. | Steven Bellavia captured this image from Mattituck, New York, on September 1, 2024. You can see the stars that form the asterism known as the Northern Cross. And you’ll notice the north-south portion of the cross follows along the Milky Way. Thank you, Steven. How to find the Northern Cross The Northern Cross is a clipped version of the constellation Cygnus the Swan. It’s an asterism, or pattern of stars that…Space · Mattituck Read Article

Probing the cosmic 'Dark Ages' from the far side of the moon

75% Center coverage: 4 sources

Astronomers want to unlock the secrets of the "Cosmic Dawn" by sending a miniature spacecraft to listen out for an "ancient whisper" on the far side of the moon.Space See the Story

Water Storage in Dams Has Caused Minute Shifts in Earth's Poles, Study Finds

100% Center coverage: 2 sources

Over the past two centuries, humans have locked up enough water in dams to shift Earth's poles slightly away from the planet's axis of rotation, according to recent research.Climate Change See the Story

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