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Zoom ins on massive galaxy cluster show tiny red dots, distant galaxies that resemble nearby

Galaxies

New Observations Reveal Galaxies Near and Far

Astronomers at this month's big winter conference explored intriguing small galaxies at various points in cosmic history.

Pandora

Solar System

The Moons of the Solar System

Not so long ago, astronomers thought only a few dozen moons orbited the planets of our solar system. Today, the total count tops 170!

Mars close-up beneath the Moon

Celestial News & Events

Observing Report: Moon Occults Mars

Sky & Telescope editors report their observations of last night's celestial event: Mars grazing or disappearing behind the Moon.

Mars Occultation December 2022 Sky Scene

Mars

See Bright Mars Wink Out Behind the Moon

The night of December 7–8 will be an exciting one for fans of the Red Planet. Not only will Mars be at opposition, but the full Moon will blot it out of the sky for many locations on Earth.

Lunar eclipse in Sept 2015 Walker

Press Releases

Get Ready for Tuesday's Total Lunar Eclipse

The total lunar eclipse of November 8th favors western North America, but the whole continent will enjoy much of the spectacle, provided skies are clear.

a black circle with a halo of light around it radiating outward on a dark blue background

Press Releases

Two Solar Eclipses Are Coming to America

Exactly one year from today, the first of two major solar eclipses just six months apart will occur over the Americas.

Planet Parade 2022 June 3_900px

Press Releases

Planet Parade to Grace the Dawn Sky this Month

All five naked-eye planets will line up in the dawn sky in June. Not only that, they’ll also be in their proper order from the Sun.

People, Places, and Events

S&T Authors Win Science Journalism Awards

Two Sky & Telescope authors have won prestigious awards recognizing excellence in science journalism.

Press Releases

Sunday Night's Total Lunar Eclipse

North American skywatchers can see the Moon turn a reddish hue as it flirts with Earth’s shadow on the night of May 15–16.

Hobby-based Q&A

Four Things to Know About the Next Solar Eclipse

Prepare for the 2020 solar eclipse with these basic facts and other resources.

Halpha sun with prominences

Celestial News & Events

How to Look at the Sun Safely

Our star is an amazing object to observe, whether by eye or with optical aid. These time-tested tips will let you see the solar disk worry-free.

Spacecraft and Space Missions

Mission Update: Mars and the Moon

Mission teams presenting at this week's Lunar and Planetary Science Conference provided updates on the Perseverance and Zhurong rovers at Mars, Chang'e 5's lunar sample return, and more.

a solar eclipse above a cloud bank with a dark blue sky turning orange towards the horizon

People, Places, and Events

Total Solar Eclipse: Reports from Antarctica

Sky & Telescope and friends report on the total solar eclipse that occurred over Antarctica earlier this week.

Lunar Eclipse November 2021 UT

lunar eclipse

North America Favored for This Week's Deep Partial Lunar Eclipse

North American observers can watch the Moon turn a reddish hue as it flirts with Earth’s shadow on the night of November 18–19 in the longest partial eclipse of the century.

Astronomy & Observing News

Willmann-Bell Books Now Available

The AAS is honored to be continuing the legacy of Willmann-Bell, Inc. by selling and publishing their robust catalog of astronomy books as an imprint of AAS Sky Publishing, LLC.

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).

Blue Moon

“True” Blue Moon Occurs Sunday, August 22nd

If skies are clear this weekend, we’ll see the full Moon. And not just any old full Moon, but the Blue Moon — the “true” Blue Moon.

People, Places, and Events

S&T Editor Wins Planetary Science Writing Award

Science Editor Camille Carlisle has won the Division of Planetary Science’s Jonathan Eberhart Planetary Sciences Journalism Award for “Rugged Worlds,” the cover story of the May 2020 issue of Sky & Telescope.

Perseid radiant

Press Releases

Perfect for the Perseids

It’s August and that means the Perseid meteor shower! One of the year’s most beloved celestial events peaks on Wednesday night−Thursday morning, August 11–12.

Finder for Berkeley 29

Beyond the Printed Page

Finder Charts for "Meet the Neighbors" in the October 2021 issue

If you read Steve Gottlieb's article in the October 2021 issue of Sky & Telescope entitled "Meet the Neighbors: The Sagittarius Dwarf Spheroidal Family," you likely followed the link for more finder charts. We include an updated finder chart (that appears on page 28) with a revised position for Wray…

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