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Illustration of Starlink satellites in grid-like orbits over radio receiver array

Astronomy and Society

A New Hope? Taming the Satellite Swarm

Going by the paperwork, 1 million satellites are headed for the skies. The question is, how many of these are real? New policy may help stem the tide.

BlueWalker 3 satellite panel dwarfs team that built it

Astronomy and Society

The Bright BlueWalker 3 Satellite Threatens Astronomy

The bright BlueWalker 3 satellite, a prototype for the even larger Bluebird satellites, is one of the brightest objects in the sky.

Illustration of Starlink satellites in grid-like orbits over radio receiver array

Astronomy and Society

Unintended Satellite Emission May Harm Radio Astronomy

Satellites’ leakage radiation, now detected for the first time, may become a major problem for radio astronomy, as “megaconstellations” keep on growing.

Astronomy and Society

The Newest and Largest Starlink Satellites Are Also the Faintest

Despite being four times larger than the original Starlink satellites, the new "Mini" version is fainter — as dim as astronomers have recommended such satellites be.

Astronomy and Society

Satellites and Space Debris Are Polluting Our Night Skies

Astronomers are sounding the alarm about low-Earth orbit satellites and space debris as significant contributors to light pollution that will affect even the remotest earthbound stargazer.

Satellite trail passes through galaxy

Astronomy and Society

Satellite Trails Mar Hubble Images

An accounting of satellite streaks across two decades of Hubble Space Telescopes finds their appearance is increasing.

BlueWalker 3 satellite panel dwarfs team that built it

Astronomy and Society

Bright New Satellites Join a Crowded Sky — Here’s How You Can Help

The imminent launch of a BlueWalker satellite, with a giant phased array antenna, portends a brightening night sky. Amateur astronomers can help record these changes with the goal of mitigating them.

An arm to the sun

Space Missions

Newest Starlink Satellites Have Gotten Brighter Again

Changes to the design of Starlink satellite spacecraft have made them brighter again, though still dimmer than the original design.

Starlink

Astronomy in Space with David Dickinson

Space Storm Knocks Out Latest Batch of Starlink Satellites

A minor space storm took down much of the latest Starlink batch shortly after launch.

Andromeda Galaxy, streaked

Astronomy and Society

Starlink Satellites Not Impacting Science — Yet

A new study of Starlink satellites’ impact on astronomy gives the community cause for both relief and concern.

Apollo 11 photo of Earth with glare from Sun

Astronomy and Society

Did Astronomers See a Distant, Dying Star? Or an Earth-bound Satellite?

What seemed a lucky break — the discovery of a gamma-ray burst in the most distant known galaxy — might instead be the flash of passing space debris. As satellites fill low-Earth orbit, such events might become common.

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.

An arm to the sun

Space Missions

Details of SpaceX's Starlink "VisorSat" Revealed

SpaceX has revealed new details on its plans to darken the Starlink satellites.

Starlink constellation around Earth

Space Missions

Starlink and the Astronomers: An Update

As Starlink satellites continue to enter low-Earth orbit — there are 360 of them now — SpaceX is working to mitigate the serious problems they pose for astronomy.

Starlink launch

Science and Space Policy

SpaceX Launches Fourth Starlink Batch; Concerns Remain

Concerns about the night sky remain as the fourth batch of Starlink satellites — and the second one to be launched within the span of a month — takes flight.

ExoMars

Astronomy in Space with David Dickinson

Space Missions to Watch in 2020

Earth invades Mars and beyond with space missions in 2020

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.

SpaceX Starlink

Space Missions

SpaceX Launches Latest Batch of Starlink Satellites

A second set of 60 Starlink satellites take to space, amid promise and controversy.

Before and after

Imaging Foundations with Richard Wright

Satellites, Begone! Remove Trails from Your Astrophotography

While the growing number of satellites above our heads is a concern, there are ways to mitigate their appearances in deep-sky astrophotography.