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January 20, 2021 Starlink launch

Astronomy and Society

Beyond Starlink: The Satellite Saga Continues

SpaceX has placed more than 1,000 Starlinks in orbit, and other companies are following suit. Here's the latest on what's being done to protect astronomy.

VisorSat

Astronomy and Society

Starlink Satellites Are Fainter Now — But Still Visible

Measurements of Starlink's "VisorSat" show SpaceX has succeeded in making a less reflective satellite. But it's still visible from dark-sky areas.

Jupiter and Saturn in conjunction

Astronomy and Society

The 400-Year Rhythm of Great Conjunctions

A new visualization reveals the centuries-long pattern of "Great Conjunctions" between Jupiter and Saturn over the centuries.

Babylonian planet grouping

Astronomy and Society

Ancient Babylonians Witnessed Unique Planetary Gathering

Jupiter and Saturn's "Great Conjunction" is a noteworthy event, but on the morning of March 25, 185 BC, an even grander planetary gathering greeted Babylonian sky watchers

Astronomy and Society

Astronomers Dim Street Lights to Home in on Light Pollution

Street lights contribute to light pollution, but they are far from the only culprits — and fixing street lights is far from the only solution.

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.

Mount Wilson wildfire

Professional Telescopes

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.

Astronomy and Society

A Message from Sky & Telescope

The staff of Sky & Telescope outline an action plan for making the night sky open to all. Feedback from the community is welcome!

Venus's June 3rd transit across solar corona

Astronomy and Society

Venus Passes in Front of the Solar Corona (VIDEO)

Two astronomers captured the silhouette of Venus as it passed in front of the solar corona.

a child outside at night catching fireflies with a net

Save Dark Skies

Photographers “Capture the Dark” with Stunning Images of the Night

Stunning images of the night remind us why we need to protect dark skies. See the photos that won the International Dark-sky Association's contest.

Roman Space Telescope

Astronomy in Space with David Dickinson

NASA Renames WFIRST: The Nancy Grace Roman Space Telescope

NASA is renaming its next flagship space observatory to honor pioneering NASA astronomer and "Mother of Hubble," Nancy Grace Roman.

Eclipse mosaic

Astronomy and Society

Medieval "Dark Eclipse" Helps Date Ice Cores — and Time Volcanic Eruptions

Scientists have used a famous "dark eclipse" of the Moon to help date ice cores collected in Greenland and the Antarctic.

Starlinks cross DECam image

Astronomy and Society

The Starlink Situation

Shots of the Starlink satellite train crossing the heavens are dramatic — even shocking — but they’re also a bit misleading. The real problems that Starlink and other megaconstellation satellites pose are more insidious.

Color composite of 2014 MU69

Astronomy and Society

New Horizons Flyby Target Receives Official Name: Arrokoth

When NASA's New Horizons flew by a distant Kuiper Belt Object on New Year's Day, they nicknamed it "Ultima Thule." Now, the object has received an official moniker: Arrokoth.

Astronomy and Society

The (Almost) Re-Opening of the Yerkes Observatory

Yerkes Observatory, a historic, castle-like building built to house a gigantic telescope, may soon reopen if all goes according to plan.

Astronomy and Society

Nobel Prize Honors Exoplanets, Big Bang Discoveries

The 2019 Nobel Prize in Physics goes to James Peebles and to Michel Mayor and Didier Queloz. The prize, which will be split in half, honors discoveries that have offered new perspectives on our place in the universe.

Thirty Meter Telescope at night

Professional Telescopes

Maunakea Observatories Shuttered Amid Protests (Update: Observatories Have Reopened)

As protests against the construction of the Thirty Meter Telescope continue, the directors of Maunakea Observatories have taken the unprecedented move of closing all observatories atop the mountain.

Ed Fendell

Astronomy and Society

Live from the Moon: How Earth Saw the First Steps of Apollo 11

Neil Armstrong's and Buzz Aldrin's first steps on the Moon changed the world. But that the world would see them wasn't a given.

Solar Eclipse in 1900

Astronomy and Society

Amateur Filmmaker Captured Solar Eclipse — in 1900

In 1900, a man named John Nevil Maskelyne filmed a solar eclipse — the first of its kind.

Starfall students

Astronomy and Society

Teens Hunt for Meteorites . . . Underwater

Students and a sled named Starfall are on the hunt for underwater meteorites, dropped as a bolide fragmented over Lake Michigan last year.

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