Space News & Blog Articles

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Did Astronomers See a Star Explode Twice?

Astronomers are trying to determine if they've witnessed a complex stellar explosion or a relatively ordinary supernova.

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Explore Orion's Massive New Stars with Binoculars

Waves of recent star formation have made Orion winter's most scintillating constellation. You can see how it all came to be.

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Glowing Arc by Andromeda Might Be Remnants of a Dying Star

Discovered by amateur astronomers, a mysterious arc of gas might be the ghostly remains of a star shedding its outer layers. However, astronomers haven’t reached a consensus yet.

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This Week's Sky at a Glance, December 19 – 28

We greet the winter solstice. Jupiter nears opposition. Will the two Dog Stars balance for you? And meet the House in the Hyades.

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New Radar Data Chills Prospects of a Subglacial Lake on Mars

There could be liquid water trapped under the southern polar cap of Mars. But new observations suggest otherwise.

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Scientists Map the Sun’s Magnetic “Surface”

Where does the Sun end and the solar wind begin? Scientists have mapped the dynamic magnetic edge that bounds our star.

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Mars MAVEN Mission May Be Lost in Space

NASA is working to restore communications with its MAVEN Mars Orbiter mission.

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This Week's Sky at a Glance, December 12 – 21

Big Jupiter now rises in the east-southeast less than an hour after dark. It's high in sharp telescopic viewing by about 10 p.m.

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Webb’s First Look at TRAPPIST-1e Hints at a Titan-like Atmosphere

Observations from the James Webb Space Telescope suggest the planet might have a nitrogen-and-methane atmosphere — but more data are needed to rule out a bare rock scenario.

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Two Stars’ Swept by the Solar System 4.5 million Years Ago 

Two winter stars left their mark long ago on wispy gas clouds near the solar system. Their passage might even have influenced life on Earth.

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Galaxies Spin on Vast Filament Like a Teacup Ride

Astronomers have discovered one of the largest structures in the universe — and the galaxies within it — spinning like a fairground teacup ride.

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Get Ready for the Geminids

It’s December and that means one of the best celestial events will grace the skies. The Geminid meteor shower should peak between Saturday night and Sunday morning, December 13–14.

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Looks Like a Wonderful Geminid Meteor Shower Ahead

With a retiring crescent Moon in the mix, prospects for the year's richest meteor shower are excellent.

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The Sun's Poles Are Different Than We Expected

A new analysis of the Solar Orbiter's unique views of the Sun's poles shows how a "conveyor belt" moves within our nearest star.

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This Week's Sky at a Glance, December 5 – 14

The Moon, waning away from full, groups up with Jupiter, Castor and Pollux on two nights. Later in the week the grand Geminid meteor shower comes into full bloom.

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The Solar and Heliospheric Observatory Celebrates 30 Years in Space

The groundbreaking mission designed to observe our Sun and its interactions with Earth celebrates three decades in space this week.

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The Gift of Warmth (and Whimsy)

An idea for the stubborn winter stargazer on your holiday list (especially if it's you!)

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Boosting the Gravitational Wave Background

Why is the gravitational-wave background — the hum made by supermassive black holes colliding across the universe — stronger than expected?

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Tiny Sparks of Lightning Detected on Mars for the First Time

The microphone on NASA's Perseverance rover unexpectedly heard tiny claps of thunder from sparks caused by colliding dust grains.

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This Week's Sky at a Glance, November 28 – December 7

Saturn remains super-thin-ringed high after dark. The interstellar comet, 11th magnitude, is now nice and high in the dark before dawn. Don't wait; moonlight approaches.

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Lure of the Obscure — Andromeda's Parachute and Dracula's Chivito

Observers can't resist the challenge of seeking faint objects with curious names. We go deep and visit two — Andromeda's Parachute and Dracula's Chivito.

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