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Liftoff! 4 astronauts in Crew-2 mission blast off to ISS
The launch of Crew-2, the 2nd flight of this particular Crew Dragon, went off without a hitch Friday morning, after being postponed due to weather.
April 23, 2021
Is there such a thing as earthquake season?
Researchers have found a connection between earthquakes in Taiwan and its dry and rainy seasons.
April 22, 2021
Martin Rees and Frederick Lamb on humanity’s fate
From nuclear weapons to biowarfare to cyberattacks, humanity has much to overcome. Martin Rees and Frederick Lamb discuss the obstacles we must face as we look forward to humanity's future on Earth.
April 22, 2021
Saving a humpback whale
Take 3 minutes to watch a feel-good video of a team of responders saving a humpback whale in distress.
April 22, 2021
Venus, in evening sky, 6 degrees from sun
Venus and Mercury are back in the evening sky. Have you seen them? Probably not; they're exceedingly close to the sun. But EarthSky Community member Helio Vital did manage to capture a photo of Venus on April 19, 2021. Way to go, Helio!
April 21, 2021
New Horizons passes milestone distance 50 AU
On April 17, 2021, the New Horizons spacecraft passed 50 astronomical units - 50 times Earth's distance from the sun - while speeding toward interstellar space. It also captured an image of another earthly spacecraft, even farther out.
April 20, 2021
How many Tyrannosaurus rex lived on Earth?
During 2.4 million years of existence, a total of 2.5 billion Tyrannosaurus rex lived on Earth, and 20,000 individual animals would have been alive at any moment, according to new calculations.
April 20, 2021
Celebrate Earth Day 2021 with NASA
For Earth Day 2021 (April 22), NASA highlights science and technology that is helping us live more sustainably on our home planet and adapt to natural and human-caused changes. Here's how to participate.
April 20, 2021
Dates of lunar and solar eclipses in 2021
Here are the dates of all solar and lunar eclipses in the year 2021. Is there one you can see? The next one is a total lunar eclipse, coming up in May.
April 20, 2021
It flew! Mars helicopter takes to the air
The Mars helicopter - named Ingenuity - successfully flew in the thin air of Mars early in the day on Monday, April 19. Images here.
April 19, 2021
