Space News & Blog Articles

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Were the Very First Stars Really That Massive?

Chaotic turbulence in primordial clouds of gas may have prevented the formation of extremely massive stars, according to new simulations by Taiwanese astronomers. The early universe consisted primarily of hydrogen […]

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This Week's Sky at a Glance, August 8 – 17

Set an alarm and take a peek east in early dawn to follow Venus and Jupiter through their spectacular conjunction this week.

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Alpha Centauri Might Have a Planet, Webb Telescope Finds

Direct images from the James Webb Space Telescope show what could be a Saturn-mass planet around Alpha Centauri.

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Moon or Not, the Perseid Meteor Shower Is On!

Sure, the Moon will be a problem. But clouds are worse. Don't miss one of the best meteor showers of the year.

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Honoring the Women of Astronomy

Even today, the names of women in astronomy are not as well known as they should be.

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Southern Splendors on Safari

Sky & Telescope Associate Editor Sean Walker and Contributing Editor Stephen James O’Meara accompanied nine adventurers on a stargazing safari for an immersive experience in the African bush in Botswana.

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This Week's Sky at a Glance, August 1 – 10

The waxing gibbous Moon of August haunts the low south. Venus and Jupiter draw toward a spectacular conjunction in early dawn.

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August Podcast: Planets Dance at Dawn

Find out “what’s up” in the August sky. We’ll track down four planets before dawn; have some fun with New Moons; peek at some Perseids; and gaze at the center of our galaxy. So load up on the bug juice, and come along on this month’s Sky Tour.

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Satellite Constellations Are Too Bright for Astronomy

The International Astronomical Union has recommended brightness limits for satellites, but companies aren't abiding by them.

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Interstellar Comet 3I/ATLAS: What We Know Now

Observations have revealed the comet’s fuzzy coma, hinted at a weird tail, and suggested an ancient history. Plus, some missions might keep observing the interstellar comet when it ducks behind the Sun.

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Congress’s NASA and NSF Budgets Counter Trump, Fund Science

The House and Senate bill drafts keep NASA near current funding levels, but the Trump administration is prematurely readying the agency for heavy cuts

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This Week's Sky at a Glance, July 11 – 19

In early dawn on Saturday the 12th, Taurus uses Venus to open his very rare, strikingly brilliant second eye. In the following days the eye slips out of place.

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New Black Hole Merger Breaks Record

Gravitational-wave astronomers have detected the collision of two beefy black holes, which created the most massive merger-made black hole found thus far.

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A Candidate Direct-Collapse Black Hole in the Infinity Galaxy

Researchers have discovered a rare ring-galaxy duo that appears to harbor a supermassive black hole formed through direct collapse

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This Week's Sky at a Glance, July 18 – 27

The waning crescent Moon joins Venus and Jupiter at dawn. In the dark of night, the Guardians of the Pole are no such things, except they are. And thereby hangs a tale. . .

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Some Planets Are Bigger Than We Thought

More than 200 planets in the TESS catalogs may be bigger than originally estimated — putting initially Earth-size planets into the super-Earth category.

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Thumbs Up for the Delta Aquariid Meteor Shower

Meteor-watchers will be busy this month and next. Not only are the Southern Delta Aquariids peaking soon, but they get a boost from additional minor showers.

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Webb Space Telescope Spies Baby Planetary System

Astronomers have found a baby system that’s just beginning to build planets — and it can tell us about how and where planet formation starts.

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NASA Launches TRACERS Mission to Study Space Weather

NASA’s TRACERS spacecraft will look at the snap of magnetic field lines at the boundary between the solar wind and Earth's magnetic field.

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This Week's Sky at a Glance, July 25 – August 3

The newly waxing Moon passes Mars low in the west, then Spica and Antares while growing more robust. At dawn, Jupiter heads toward Venus.

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Betelgeuse's Companion Has Been Found — Or Has It?

A new image from the Gemini Observatory might show a stellar companion to Betelgeuse, but the discovery is tentative.

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