A daily update by email. Science news, great photos, sky alerts.
Earth and Ceres will be closest for 2018 on February 1. Ceres hasn't been this close since 2009. Start looking for this tiny world - largest body in the asteroid belt - now.
Because we're looking at it edge-on, we can't see this galaxy's spiral arms. But we can see the flat disk of the galaxy and its bulging mid-section.
There has been a dramatic increase - almost double- in small hand-held lasers pointed at the cockpits of low-flying aircraft at night.
Carol Greider figured out that an enzyme called telomerase is what prevents our chromosomes from getting smaller and smaller.
EarthSky asked its 600+ Global Science Advisors vote on which scientists had best communicated with the public during 2009. Neil deGrasse Tyson's won.
Every winter, people in North America are encouraged to go outside and count birds, for science. A report on the 2009 winter bird count, aka the Christmas bird count.
Today is the day on which we begin consuming more resources than Earth is producing - and producing more waste than Earth can absorb - for 2009.
The June solstice will happen on June 20, 2024. It's the longest day for the Northern Hemisphere and the shortest day for the Southern Hemisphere.
Boötes the Herdsman is a large constellation that holds one of the brightest stars in the sky, Arcturus. Only 3 other stars and the sun are brighter.
Sun news for June 16, 2024. All eyes are focused on AR3712, currently the most active and interesting sunspot group. Stay tuned.
What does summer mean to you? Here are some of the answers you shared on social media. And tune in to our livestream on June 17, at 12:15 p.m. CDT.
Visible planets and night sky guide for June 2024. Tonight, look for the waxing gibbous moon near the bright star Spica in Virgo the Maiden.
The heliosphere is a bubble of solar gas that extends outward and protects the planets from interstellar radiation. Scientists would like a probe to study it.
The cicadas are here! Have you seen - and heard them - in your neighborhood? Cicadas may be plentiful and loud, but they're basically harmless.
The 1st crewed Boeing Starliner - launched toward the ISS on June 5 and docked June 6, 2024 - will remain on orbit until at least June 22 for an extended evaluation.
If you live in the Northern Hemisphere, your earliest sunrises of the year are happening around now. Southern Hemisphere? Your earliest sunsets are around now.
Evolution alone cannot protect animals from climate extremes like heatwaves and deep cold. Animals are adapting their behavior to help survive global warming.
Are sloths really as slow as people say? Are they equally slow in all environments? Read slowly to find out more about these calm and smiling animals.
Giant Jupiter is closest to Earth for 2024 on December 6. Then Earth will fly between the sun and Jupiter - bringing Jupiter to opposition - on December 7.
World Oceans Day has been honored since 1992. It's a day to raise awareness about how we're connected to the oceans and how we can protect ocean habitats.