1–20 of 4,924 results

People, Places, and Events

Mount Wilson Escapes Wildfire; Amateur Observatory Destroyed

Firefighting crews held the line as wildfire threatened Mount Wilson; an amateur observatory built by the Tri-Valley Stargazers was not so lucky.

EnVision Orbiter

Solar System

Race to Venus: How We’ll Verify Phosphine

Confirming phosphine's presence on Venus is difficult from Earth . . . and that makes a good case for a mission to our sister planet.

Sunspots at solar minimum vs. maximum

Solar System

Sun’s Activity Cycle Is Stabilizing

Solar Cycle 25 is here, and forecasts suggest the next decade of the Sun’s activity will mimic the last one — halting a 40-year trend.

Ariel transits Uranus

Solar System

Uranian Moons Are Like Dwarf Planets

The moons of Uranus exhibit heat signatures similar to dwarf planets in the Kuiper Belt — where the moons were likely born.

Gibbous Venus from Akatsuki

Astrobiology

Potential Biosignature Found in Venus’s Clouds

Astronomers might have found a potential indication of life in the clouds of Venus.

Dark matter: Theory vs. Observed

Cosmology

Hubble Images Reveal Dark Matter Problem

Astronomers studying Hubble Space Telescope images of massive galaxy clusters have uncovered a potential problem with dark matter.

2020 QU6

Astronomy in Space with David Dickinson

Amateur Astronomer Finds Kilometer-size Asteroid

A grant front the Planetary Society enabled an amateur astronomer's discovery of kilometer-size asteroid 2020 QU6.

Andromeda's halo and 43 quasars

Galaxies

Astronomers Map Andromeda’s Halo

Astronomers have observed 43 quasars in back of our sister galaxy, Andromeda, using the distant beacons to map its halo of hot gas.

NTB via Juno

Planets

Stormy Times on Jupiter, Comet Howell Steps Up, and More

Colder weather might be coming, but don't pack away that telescope! You'll miss a powerful storm that's remaking Jupiter's North Temperate Belt, a returning comet, Mira on the rise, and a bright supernova in the Great Bear.

Jupiter, Ganymede, Europa and double shadows, March 25, 2019

Solar System

Study Suggests Jupiter Could Have 600 Moons

New detections of candidate moons suggest that the king of planets could have hundreds of smaller satellites.

Lick Observatory

Astronomy in Space with David Dickinson

Historic Lick Observatory Survives California Fire

The Lick Observatory, a major astronomical institution outside San Jose, has survived a devastating California wildfire mostly unscathed.

This Week's Sky At a Glance

This Week's Sky at a Glance, September 4 – 12

Mars is big, bright and close as it nears opposition! It nears the gibbous Moon this weekend.

Antares, imaged

Night Sky Sights

Meet Antares: The Star That Is Not Mars

Antares is a red supergiant that — like Betelgeuse — will one day go supernova.

Gravitational waves from GW190521

Cosmology

Record-breaking Signal Reveals New Population of Black Holes

Gravitational-wave observatories have detected the most massive black hole merger yet, and it's challenging our ideas of black hole formation.

Sky Tour Astronomy Podcast

September 2020: Four Planets & More!

Take advantage of September's beautiful evenings to gaze upward as you listen to our guided tour of the star-filled sky.

Twinkling quasar

Solar System

Twinkling Quasar Hints at Mysterious Nearby Plasma Cloud

Radio observations have turned up evidence of a cloud of hot plasma near — or even in — the solar system. But its distance estimate is still up for debate.

Protoplanetary disk

Solar System

The Origin of Earth’s Water

Scientists have discovered a new candidate source for Earth's water: building blocks of the primordial solar system known as enstatite chondrites.

OGO 1

Spacecraft and Space Missions

Half-ton OGO 1 Spacecraft Set to Reenter

NASA's Orbiting Geophysical Observatory 1, a bus-sized relic of the early Space Age, is set to reenter in the coming week.

Charon

Solar System

How Did Pluto's Moons Form?

A massive collision with Pluto’s moon Charon could have formed the dwarf planet’s collection of smaller moons.

Algol

Astronomy and Stargazing Projects

Take a Roller Coaster Ride on a Fast Eclipsing Binary

How would you like to see a star drop two magnitudes in the time it takes to eat dinner? Easy to do. Just check out one of these fast eclipsing binaries — they'll make your head spin.

1 2 3 247
Advertisement
Advertisement
Advertisement
Advertisement