SUNSET: 
Light Pollution Is Increasingly Variable Around the World
Scientists have unveiled a new dynamic view of our world at night, showing for the first time a night-by-night view of changes in light pollution.
Science with Astrophotography
Your pretty pictures can contain valuable information.
Photometry: Measuring the Stars
Here's how you can contribute to the science of astronomy.
A New Kind of Satellite Could Damage Your Eyes
Reflect Orbital plans to launch gigantic satellites to reflect sunlight into regions where night has already fallen, potentially harming eyes, altering sleep, and blocking the starry sky.
Light Pollution: What Is Brightening Our Night Skies?
Walking through neighborhoods, volunteers identified sources of light pollution —surprisingly, streetlights weren’t the main culprit.
Citizen Science: Projects & Collaboration
T Coronae Borealis Isn't the Only Star Ready to Blow — Meet U Gem
As we wait on recurrent nova T CrB, dwarf nova U Geminorum is teeing up for its next 8-magnitude outburst.
Space Industry Adds Threats to Astronomy, Light Pollution Remains a Big Problem
Multiple effects from ever-increasing satellite launches could impact future observations; the biggest threat to astronomy, though, is still coming from the ground.
Citizen Science: Projects & Collaboration
Visual Observing vs. Smart Telescopes — Finding Harmony
The latest smartscope astrophotography craze opens the door to some incredible opportunities for both beginners and seasoned observers.
High School Citizen Scientists Join the Hunt for Exoplanets
A group of high school astronomy students helped confirm and characterize a planet slightly smaller than Saturn that closely orbits its star.
Citizen Science: Projects & Collaboration
Citizen Scientist Wins Prestigious AAS Award
The American Astronomical Society recognized Dan Caselden’s contributions to science at their recent winter meeting.
How to Measure Jupiter's Deflection of Starlight
Get involved in an extraordinary experiment to test Einstein's theory of General Relativity — and you can do it from your backyard.
Citizen Science: Projects & Collaboration
The DEB Initiative: How Citizen Scientists Can Help Broadcast Eclipses
A citizen-science project aims to broadcast the eclipses coming up this year and next.
"Discover the Night" During International Dark Sky Week, April 15–22
Protect the night sky — join the International Dark-Sky Association for activities during International Dark-Sky Week.
Light Pollution Is Increasing Even Faster Than We Realized
The average brightness of the night sky is increasing by 10% every year, making the stars less visible.
Light Pollution Is Creeping Up on the World's Observatories
Astronomical observatories enjoy some of the world’s darkest night skies. But even there light pollution is spreading, a new study suggests.
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.
Citizen Science: Projects & Collaboration
Citizen Scientists Detect Dusty Disks
Disk Detective, a citizen science project dedicated identifying planet-forming disks around young stars, reports their latest results.
What we know about Light Pollution – and What We Don’t
The International Dark-Sky Association’s has summarized more than 300 peer-reviewed studies on the effects of artificial light at night in an effort to help dark-sky advocates.
Celebrate Dark Skies This Week, April 22–30
Are you interested in combating light pollution? International Dark Sky Week, which starts today, offers events in which you can learn how.
Under One Sky: Let's Address Light Pollution Together
Concerned about light pollution? Join a virtual conference this weekend that looks at ongoing global efforts to mitigate it.
