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EarthSky Voices

Space

Tally of near-Earth asteroids passes 40,000

Astronomers announced in November 2025 they've now discovered over 40,000 near-Earth asteroids. What risks do these pose to Earth?

What if a small black hole devoured you?

A professor of physics from Vanderbilt University, Robert Scherrer, describes what would happen to the human body if a small black hole passed through it.

Why don’t we feel Earth’s spin?

We don't feel Earth spin on its axis because Earth's spin is steady and constant, carrying us as passengers right along with it.

Exoplanet atmospheres are a key to habitability

The habitable zone of a planet might be key to whether life can survive there. But so are exoplanet atmospheres, scientists say.

Shape of a supernova detected 1 day after explosion

Astronomers used quick work to point a telescope at a supernova blast and detected the shape of a supernova just one day later.

Whoa! Universe’s expansion slowing down?! See a video

We thought we lived in a rapidly accelerating expanding universe after all. But new research suggests the universe's expansion is already slowing.

Black hole record: Brightest and most distant flare yet

Astronomers have found the biggest and most distant black hole flare yet. It was likely caused by a massive star too close to a supermassive black hole.

Look out our galaxy’s south window, into intergalactic space

Use the Great Square of Pegasus to locate Fomalhaut. Then you're on your way to looking out our galaxy's south window into intergalactic space.

A view of the Milky Way galaxy in unprecedented radio color

Astronomers released a new radio view of our Milky Way galaxy on October 29, 2025. It's the largest low-frequency radio color image of the Milky Way yet.

Why were prehistoric insects so enormous?

Hundreds of millions of years ago, giant insects were common on Earth. In fact, prehistoric insects were here before the dinosaurs!