41–60 of 183 results
Milan (before change to LED lights)

Astronomy and Society

The Lost LED Revolution: Light Pollution Is Increasing

The transition from sodium lights to LEDs, the so-called “lighting revolution”, was supposed to reduce energy consumption and bring back the starry sky, but new satellite data indicate it’s not working out that way.

Solar Eclipse 2017

Solar System

Millions of Americans Viewed August Solar Eclipse

The 2017 solar eclipse could easily be the most watched event in US history. Can we learn something from it?

Astronomy and Society

Eclipse Aftermath Brings Lawsuit Against Amazon

Counterfeit eclipse glasses created great confusion in the days prior to the solar eclipse. Luckily few cases of eye damage have been reported.

Astronomy and Society

The Eclipse as Seen by Citizen Scientists

Some academic and citizen-science groups came up with neat initiatives for eclipse day. Let’s find out how they did.

Covers of The Strolling Astronomer

Astronomy and Society

The Strolling Astronomer Celebrates 70 Years

Still active today, the Association of Lunar & Planetary Observers and its journal got their start on March 1, 1947.

Rooftop micrometeoroids

Astronomy and Society

Micrometeorites Found on City Rooftops

A recent study found micrometeorites in piles of dirt collected from urban European rooftops.

Students watching a solar eclipse

Astronomy and Society

Get Funds for 2017 Eclipse Outreach Projects

Thanks to some timely NSF support, the American Astronomical Society is offering dozens of small grants to U.S. groups that offer outreach programs tied to the 2017 s


Astronomy and Society

The Year 2016 Will Be One Second Longer

Do you think 2016 has seemed unusually long? An international agency has decided to make it even longer.

Vera Rubin in 1965

People, Places, and Events

Vera Rubin, "Mother of Dark Matter" (1928–2016)

Astronomer Vera Rubin, known for her revolutionary work confirming the existence of dark matter, died on December 25th. She was 88.

Orion StarBlast 4.5 in a library

Astronomy and Society

"Library Telescope" Program Takes Off

From humble beginnings in 2008, a simple idea — equipping libraries with loaner telescopes — has caught on across the United States.

Persian illustration of Pegasus constellation

Astronomy and Society

IAU Standardizes 212 Traditional Star Names

Bringing order to chaos, the International Astronomical Union has approved standardized spellings and designations for the traditional names of 212 bright stars.

Real and

Celestial News & Events

Embracing the "Supermoon," Hyped or Not

Much has been said and written about the Moon's proximity to Earth today. Is that a good thing or a bad thing?

daily minor planet, classic view

Solar System

Daily Alert for Asteroid Flybys

A new e-digest from the International Astronomical Union’s Minor Planet Center gives the public a head’s up on passing asteroids.

The Sun during May 1967 solar flare

Astronomy and Society

1967 Solar Flare Nearly Took U.S. and Soviets to Brink of War

An historical study from former U.S. military officials found that a solar flare was nearly responsible for military conflict with the Soviet Union in May 1967.

Save Dark Skies

Measuring the Impacts of Light Pollution

Light pollution is pervasive, and its impact on people is larger than you might think.

Global Astronomy Month logo

Astronomy and Society

Celebrate Global Astronomy Month

Join the world’s largest celebration of astronomy — in person or via online webcasts of events — throughout April.

A U.S. Navy officer uses a sextant at sea.

Astronomy in Space with David Dickinson

Navy Resumes Celestial Navigation Course

Modern security threats have brought back an old method — celestial navigation — to help U.S. Navy sailors navigate the high seas.

Milky Way from Arches National Park

People, Places, and Events

It's International Dark-Sky Week!

What began as a student's simple idea a decade ago has grown into a worldwide celebration of the night sky and easy ways to reduce light pollution.

Harvard College Observatory

Astronomy and Society

Flood Threatens Photographic Plates

A burst pipe flooded Harvard College’s Observatory Hill, submerging thousands of historic photographic plates underwater. Recovery is now under way.

Canyonlands National Park at night

Astronomy and Stargazing Projects

Help Keep Our Skies Dark — Join IDA Today

It's high time that we amateur astronomers got serious about protecting the night sky from light pollution.