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Jovian sprite

Solar System

Juno Discovers Sprites and Elves on Jupiter

NASA's Juno spacecraft has captured ultraviolet images of a rare atmospheric phenomenon in Jupiter's atmosphere.

Psyche

Solar System

Psyche: A Metal-Rock World with Iron Lava?

New observations suggest the main-belt asteroid Psyche is an intriguing world, possibly one with volcanic flows of iron on its surface.

Near-Earth asteroid passing Earth

Solar System

(Very) Small Chance of Apophis Asteroid Impact in 2068

The subtle effect of sunlight may turn the near-Earth asteroid Apophis toward Earth in 2068 . . . but chances for impact remain small.

Water on the Moon

Solar System

Water on the Moon Isn't Just at the Poles

Water exists even on the sunlit Moon, a new study shows — trapped in glass beads but still extractable for lunar exploration.

ALMA image of Hubble Ultra Deep Field

Galaxies

Astronomers Chart Star Formation History, Glimpse Fate of the Universe

Astronomers have tallied how star-making material evolved over cosmic time — and they've predicted how long stars will keep forming before the universe goes dark.

TAG Osiris-REX

Solar System

Osiris-REX "TAGs" Bennu, Returns Stunning Views

See images and video from NASA’s Osiris-REX spacecraft as it samples the Nightingale site.

Magma ocean and crust

Solar System

Moon’s Magnetism Might Have Protected Earth

The Moon's magnetic field, now long gone, might once have shielded Earth from the young Sun's radiation.

ATLAS with a tail

Explore the Night with Bob King

Comets Crawl through the Skies at Dawn and Dusk

Comets have been scarce since NEOWISE departed the scene. Not anymore. Suddenly, there are four fresh faces visible from dusk til dawn.

OSIRIS-Rex

Astronomy in Space with David Dickinson

Osiris-REX Successfully Collected Sample from Asteroid Bennu

NASA's Osiris-REX mission has successfully touched down on the asteroid Bennu to collect a sample of its surface for return to Earth.

Artist's impression of HR 6819

Black Holes

Casting Doubt on a Nearby Black Hole

New research has shown that the recently-discovered closest black hole to Earth might not be a black hole after all but a binary star.

People, Places, and Events

Pandemic Inspires Surge in Telescope Sales

A silver lining to the long year we've had is a renewed interest in the night sky.

Bootes and the Big Dipper

Learning About the Sky

Meet Arcturus: Guardian of the Bear

Arcturus is one of the brightest stars in the sky — a cool red giant in Bootes, the Herdsman, that's often tied mythologically to Ursa Major, the Bear.

Artist's impression of a Y-dwarf star

Stellar Science

Taking Stock of Backyard Worlds

Scientists have used the Spitzer Space Telescope to confirm seventy-five new substars uncovered by the citizen science project Backyard Worlds: Planet 9.

Global false-color map of Bennu

Solar System

Osiris-REX Finds Some of Solar System's Oldest Rocks on Bennu

NASA's Osiris-REX mission has found evidence of ancient water flows on the surface of asteroid Bennu.

Space Debris

Astronomy in Space with David Dickinson

Distant Space Debris a Threat to Satellites

New observations show we're not tracking a majority of debris in higher orbits.

Stars orbit black hole

Black Holes

Black Hole Scientists Win 2020 Nobel Prize in Physics

This year’s award goes to three researchers who played key roles in developing the theoretical and observational evidence for black holes.

Mars the magnificent

Celestial News & Events

Behold Mars! The Best View Until 2035

After a two-years hiatus Mars returns big and bright at opposition on October 13th, its best apparition until September 2035.

Pioneer Venus

Solar System

Did Pioneer Venus Find Phosphine First?

NASA's Pioneer Venus mission, which launched in 1978, found the first tantalizing clues of phosphine, a potential biosignature gas — but it took 40 years to realize it!

Sky Tour Astronomy Podcast

October 2020: Mars is the Star!

October evenings offer many wonderful night-sky sights — including a dramatic appearance by Mars — and you can find them by listening to our guided audio tour of the star-filled sky.

Venus

Pro-Am Collaboration

Calling on Amateur Astronomers: Observe Venus!

The Mercury-bound BepiColombo spacecraft will fly by Venus on October 15th, and the mission is asking amateurs for their help.

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