Space News & Blog Articles

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This Week's Sky at a Glance, August 30 – September 8

Low in twilight, climbing Venus and descending Spica prepare to pass each other. After dark Vega crosses the zenith, and Scorpius beds down. Mercury shines at dawn.

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No Intermediate-Mass Black Hole for Omega Centauri?

Last month, astronomers discovered a giant black hole in Omega Centauri. But it might contain a swarm of stellar-mass black holes instead.

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Flight into Darkness — Observe the International Space Station in Earth's Shadow

Did you know you can see the International Space Station even when it's in Earth's shadow? We explore possible reasons why.

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See the Surface of Polaris, the North Star

New data from an array of telescopes has enabled astronomers to visualize the surface of the North Star, Polaris.

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Event Horizon Telescope Pushes Toward Sharper Images

The worldwide network of radio dishes has achieved the highest resolution ever obtained from Earth’s surface.

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Observers’ Report: First Views of the Chinese “Thousand Sails” Satellites

Amateur astronomers have shown that the first satellites of the Chinese Qianfan (“Thousand Sails”) constellation are bright enough to be seen naked-eye.

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Loosening the Hubble Tension

New James Webb Space Telescope observations may have done with one of the longest-standing tensions in cosmology.

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This Week's Sky at a Glance, August 23 – September 1

We're in peak Milky Way season, and the evenings have become dark and moonless. Andromegasus is up. So is Saturn. Before dawn, the late-risen Moon passes over Jupiter and Mars.

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See Amazing Images from First-Ever Earth-Moon Flyby

The European mission to Jupiter's icy moons provided us with some amazing views closer to home, of Earth and the Moon.

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Young Astronomer Wins Stellafane Youth Outreach Award

A Westfield, Massachusetts, teenager is the recipient of an award in recognition of her multi-faceted outreach activities.

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A Baby Planet Reveals Its Hiding Place

New analysis reveals evidence of a super-Earth-mass exoplanet forming in the disk surrounding the star TW Hydrae.

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Visit Ara, the Celestial Altar

This far-southern constellation contains some delightful sights for small telescopes.

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This Week's Sky at a Glance, August 16 – 25

Vega shines overhead as the zenith star at dusk. Jupiter and Mars are separating. When the Moon is just past full it poses next to Saturn — which, by no coincidence, is less than a month from opposition.

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Dino-Era Asteroid Came from the Outer Solar System

A new chemical analysis confirms the Chicxulub impactor was a fragile type of asteroid that formed in the outer solar system, unlike several other ancient impactors.

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Status Report and Expectations for Comet Tsuchinshan-ATLAS

Is Comet Tsuchinshan-ATLAS falling apart? How bright will it likely get? We try to answer those questions and more.

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How to Define a Planet – The Sequel

Hold your breath: astronomers are re-evaluating their definition of a planet. Spoiler: it won’t bring Pluto back into the family.

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Did the Milky Way Form Faster Than We Thought?

New research suggests that our galaxy’s first stars might have come together within a billion years after the Big Bang.

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Status Report: Gravitational Waves

Astronomers at the International Astronomical Union report that we have now detected more than 200 gravitational-wave events, most the merger of two black holes.

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Tonight's Perseid Meteor Shower May Be Dipped in Aurora Sauce

The Perseids peak on Sunday night, August 11-12 and just might be joined by a colorful display of northern lights. 

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This Week's Sky at a Glance, August 9 – 18

The Perseid meteor shower peaks late Sunday night August 11th and maybe Monday night too. Jupiter and Mars have a close conjunction on the morning of the 14th, looking radically different in the same telescopic view.

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Prepare for the Perseids and a Pretty Planetary Pairing

The year’s long-awaited Perseid meteor shower will be accompanied by a graceful planetary conjunction. It’s well worth staying up all night to watch.

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