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Posts by
EarthSky Voices
Big Dipper (Sky Bear) comes to Earth in November
Every year, the Big Dipper (Great Bear) descends to its lowest point in the sky on November evenings. This makes it difficult, or impossible, to see.
November 11, 2022
Carl Sagan born 88 years ago today
For many, for decades, Carl Sagan was the best-known astronomer on Earth. He popularized astronomy in a popular TV series. Today is his birthday.
November 9, 2022
Emperor penguins added to ‘threatened’ list
Emperor penguins are joining the list of threatened species from the Endangered Species Act. Will humanity be able to keep emissions low enough to save them?
November 7, 2022
Alien technology might signal extraterrestrial life
Our technology – from cell towers to fluorescent light bulbs – could signal the presence of life. Can we find life in the universe from alien technologies?
November 3, 2022
Ozone hole continues shrinking in 2022
Earth's ozone hole over Antarctica was biggest between September 7 and October 13. The depleted area was smaller than last year and continued a shrinking trend of recent years.
October 28, 2022
What causes ocean waves?
Energy passing through water creates ocean waves. Some are even hazardous. Here's what you need to know, in this 30 second video.
October 14, 2022
Why the Endangered Species Act keeps failing
The Endangered Species Act is a case of too little, too late. Only a tiny fraction of listed flora and fauna have recovered. Read more.
October 13, 2022
Collision may have formed the moon in only hours
New simulations from NASA show that a collision may have formed the moon in mere hours. Watch a video of the simulation and read more.
October 5, 2022
Hurricane storm surge: what is it?
Of all the hazards that hurricanes bring, a hurricane storm surge is the greatest threat to life and property along the coast. Learn more here.
September 28, 2022
Neptune discovered on this date in 1846
Read the fascinating story of the discovery of Neptune, found on September 23, 1846. It was the first planet to be discovered not solely by looking in the sky ... but by using mathematics.
September 23, 2022
