41–60 of 5,309 results
Star with planet

Stellar Science

Astro News: Planet-eating Stars and an Accidental Brown Dwarf

This week in astronomy news: A citizen scientist happens upon a weird, ancient brown dwarf and astronomers discover that Sun-like stars eat their own planets.

Comet 4P/Faye and tail

Solar System

Making Time for Morning Comets

If you like mixing comets with the quietude of observing in the small hours, September opens with five fuzzy vagabonds just waiting for a visit.

Astronomy & Observing News

AAS Journals Will Switch to Open Access in 2022

Research results in astronomy, solar physics, and planetary science are about to become more widely accessible to scientists and the public alike. The American Astronomical Society (AAS) today announced the switch of the Society’s prestigious journals to fully open access as of 1 January 2022.

Under this change, all articles in the AAS journal portfolio will be immediately open for anyone to freely read. The transition will affect the Astronomical Journal (AJ), the Astrophysical Journal (ApJ), Astrophysical Journal Letters (ApJL), and the Astrophysical Journal Supplement Series (ApJS).

Guide to the Summer Triangle

Sky Tour Astronomy Podcast

Summer Triangle Overhead

The calendar might say “September,” but now is the perfect time to explore the Summer Triangle. Find your way with this month’s Sky Tour podcast.

Gamma Cassiopeia

Celestial Objects to Observe

Meet Gamma Cassiopeiae, the Classic Eruptive Variable

Gamma Cassiopeia may lack a proper name, but the middle star of the "W"-shape constellation is worth finding on the sky.

Carolyn Shoemaker

People, Places, and Events

Remembering Carolyn Shoemaker (1929–2021)

Shoemaker discovered more than 800 asteroids and 32 comets, including one of the most famous comets of the 20th century.

Jupiter and Saturn in Capricornus, early Sept. 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, Aug. 27 – Sept. 4

Venus, Jupiter, and Saturn are all getting a little higher in early evening. Vega passes the zenith soon after dark; Deneb does so two hours later. Andromeda is up in the east.

ESCAPADE

Spacecraft and Space Missions

ESCAPADE Blue and Gold Orbiters Head to Mars in 2024

A pair of spacecraft will head to Mars in 2024 as the ESCAPADE mission, to study the Martian space weather environment.

Stellafane banner

People, Places, and Events

Welcome Back, Stellafane

After two years apart, amateur astronomers and telescope makers from around the country met at the top of Breezy Hill to enjoy the stars with old and new friends.

Astronomy & Observing News

New Observations Challenge Popular Radio Burst Model

Strange behavior caught by two radio observatories may send theorists back to the drawing board.

2021 PH27

Astronomy in Space with David Dickinson

Astronomers Discover Asteroid that Flies Close to the Sun

Newly discovered asteroid 2021 PH27 orbits the Sun in just 113 days.

Zoomed-in view of barred spiral galaxy NGC 4921

Galaxies

Watch Black Holes Grow, Galaxies Fall

Watch black holes grow and galaxies fall — astro photos and visualizations to get you through the week.

We want to hear from Amateur Astronomers. Take about 15 minutes to tell us about your hobby - what's working, any challenges, and how we can best support you and your club. Enter to win fun prizes!

People, Places, and Events

Amateur Astronomy in 2021

Calling all amateur astronomers: NASA’s Night Sky Network wants to hear from you!

Mars Reconnaissance Orbiter over Nilosyrtis Mensae (art)

Solar System

Discovery of a Recent Martian Mudslide

A geologically recent landslide on Mars appears like mudslides on Earth — but it would have required water during a time when Mars was expected to be dry.

Moon under Saturn and Jupiter, Aug. 20-21, 2021

Celestial News & Events

This Week's Sky at a Glance, August 20 – 28

Jupiter and Saturn are just past opposition, so they dominate the sky all night. They inhabit dim Capricornus, which pushes Sagittarius westward. Venus, even showier, owns the western twilight but sets by full darkness.

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

Celestial News & Events

The 12-Year Cycle of Jupiter Oppositions

Jupiter is at opposition on August 19th. If we take the long view — 12 years long — we can watch Jupiter's oppositions as it passes through the zodiac constellations.

Venus

Solar System

Venus: Thin-skinned and Likely to Blow

Scientists found a strange little volcanic feature on the edge of a Venusian corona, giving further credence to the theory that the planet has a thin outer layer and an active interior.

Decadal survey: Origins, LUVOIR, HabEx, Lynx

Astronomy & Observing News

Astronomers Dream Big, Consider Four Future Space Telescopes

Four concepts are competing to be NASA’s next flagship mission. From exo-Earths to X-rays, what will the future hold?

Celestial Objects to Observe

It’s the Blue Moon . . . the “True” Blue Moon!

If skies are clear this weekend, you'll see the full Moon. And not just any old full Moon, but the Blue Moon . . . the "true" Blue Moon!

Jupiter and GRS

Explore the Night with Bob King

Jupiter Dazzles at Its Brightest and Closest This Year

Jupiter comes to opposition on August 20th, when it will shine brighter and closer than at any other time this year. With nights starting earlier and cooler temperatures arriving, there's no better time to make the most of the planet.

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