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How much traffic on eclipse day?

Expert analysis showing how many people – and how much traffic congestion – can be expected along the path of the August 21, 2017 total solar eclipse.

The eclipse is just 2 lunations away

As we approach another new moon, astronomer Guy Ottewell shares his profound understanding of lunar cycles and the coming total solar eclipse.

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.

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.

Summer solstice at Stonehenge

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

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.

Today in science: Sally Ride in space

She was the 1st American woman in space, eventually flying on 2 shuttle missions. She played a key role in the investigation of the Challenger disaster. And she inspired people.

Climate change shrinking Colorado River

Ongoing drought – and increasing temperatures – have reduced water flow in the Colorado River, with more dramatic reductions expected. This ongoing, unprecedented event threatens water supplies in cities in the U.S. West and some of the most productive agricultural lands anywhere in the world.

Oldest fossils of our species

Researchers have uncovered 300,000 year-old fossil bones of Homo sapiens in Morocco, the oldest reliably-dated fossil evidence of our species yet.

What’s it like to see a total solar eclipse?

Words often fail when trying to explain the kaleidoscope of sights, sounds, feelings and emotions that consume us during this other-worldly event.

Dwarf star bends light, confirms Einstein

Awesome observation! Astronomers used the Hubble Space Telescope to measure the mass of a nearby white dwarf, as it bent the light of a more distant star.

World Oceans Day 2017

“Our oceans, our future” is the theme for World Oceans Day 2017.

Going to the beach? Watch this video

Rip currents – sometimes called by the misnomer rip tide – flow outward from beaches, sometimes faster than humans can swim. Here’s what to do if you get caught in one.

Cool preview of Pluto craft’s next target

On June 3, July 10 and July 17, astronomers will be watching as tiny MU69 in the outer solar system – the New Horizons spacecraft’s next target – occults or blocks the light from 3 different stars.

Your immune system in space

New video from NASA about studies looking at the effects of space travel on the human body’s immune system.

Born in June? Here’s your birthstone

Happy birthday June babies! Your month has 3 birthstones – pearl, moonstone, and Alexandrite.

How do hurricanes get their names?

The Atlantic hurricane season starts June 1 and ends November 30. Here are the hurricane names for the 2017 season.

Top 5 questions about tornadoes

More tornadoes occur in the U.S. than any other country, mainly in the Great Plains, Midwest and southern states. Two meteorology professors answer questions.

Biblical signs in the sky?

Will the sky on September 23, 2017 mirror “signs” from the Book of Revelation in the Bible? An astronomer responds.

Full-sphere, 360-degree ISS transit

Super cool, interactive image of a transit across the sky of the International Space Station, via Project Nightflight of Austria.