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Global coral bleaching event likely ending

Good news for coral reefs at last! After 3 years, the global coral bleaching event is likely over, scientists say.

Star of the week: Alphecca

Alphecca. Gemma. Alpha Coronae Borealis or simply Alpha Cor Bor. They’re all names for one star – the brightest star in the constellation Northern Crown.

M5, your new favorite globular cluster

Sure, M13, the Great Hercules cluster is wonderful. But some amateur astronomers say this cluster, M5, is even better.

Why hottest weather isn’t on longest day

Solstice 2017 – longest day for us on northern Earth – has passed. But the hottest weather for the Northern Hemisphere is still to come. The reason is called the lag of the seasons.

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Sun moves in front of Gemini on June 21

On June 21, 2017, at around 15:00 UTC, the sun moves out of the constellation Taurus and into the constellation Gemini the Twins.

Kepler finds 10 Earth-like exoplanets

NASA’s Kepler space telescope has identified 219 new exoplanet candidates, 10 of which are near-Earth size and in the habitable zone of their star.

Top 10 things about brown recluse spiders

It’s their active season. Here are 10 things to know about these venomous spiders that like to live where we do.

All you need to know: June solstice 2017

It’s that beautiful time of year again in the Northern Hemisphere, when the June solstice – your signal to celebrate summer – is nearly upon us.

Space gardening

Future space outpost dwellers will need to grow plants for food and to recycle air and water. Here’s what scientists are learning about space farming from plants grown on the ISS.

Video: Watching solstices and equinoxes from space

See how sunlight falls on Earth’s surface during the solstices and equinoxes, and get a better understanding of why Earth’s tilt causes the seasons.

Summer solstice at Stonehenge

Why do people gather at Stonehenge in England on the solstice? Info and photos here.

Summer solstice tale of 2 cities

On the June solstice, the sun sets at the same time in New York City and St. Augustine, Florida. But New York has an hour more of daylight. How’s that happen?

Elon Musk’s Mars manifesto

What if the cost of going to Mars as a colonist were less than US $200,000, or about the median cost of a house in the U.S.? Would you go? Elon Musk thinks many would.