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More evidence for a Planet 9

No new large planet on the outskirts of our solar system has yet been discovered, although evidence is building, astronomers say. By the way, if Planet 9 does exist … it’s definitely not headed our way.

What are gravitational waves?

If you understand how a trampoline works, you’ll be able to understand what gravitational waves are.

Gravitational waves, and more, from merging neutron stars

On Monday, LIGO and Virgo announced the 1st detection of gravitational waves produced by colliding neutron stars, and 1st observed in both gravitational waves and light. “It ushers in a new era in astronomy.”

The UK had a red sun Monday

Social media was buzzing on Monday with photos and accounts of the red sun over the UK. British weather forecasters said it was dust from the Sahara, raised via Hurricane Ophelia.

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Egg-shaped Haumea has a ring

Dwarf planet Haumea – which orbits our sun in Pluto’s realm of the solar system – has become the first trans-Neptunian object known to be encircled by a ring.

Look for Orionid meteors this month

Details on the annual Orionid meteor shower. How and when to watch. In 2017, the peak morning is probably October 21. But start watching now, before dawn!

Creatures raft across Pacific, thanks to tsunami

Hundreds of species hitched a ride on debris from the 2011 Japanese tsunami for a 4,400-mile journey across the Pacific Ocean.

Chasing the northern lights in Alberta

A night sky timelapse by Jack Fusco featuring frozen lakes, fog inversions, and of course the northern lights!

Tropical volcanoes trigger El Niños, says study

A new study shows how large volcanic eruptions cool tropical Africa, spawning El Niño events.

Intense storms batter Saturn moon Titan

“I would have thought these would be once-a-millennium events, if even that,” said a researcher. Instead, the storms on Titan happen about once a Saturn-year, creating massive floods in an otherwise-desert terrain.

ISS over Puget Sound, Washington

Photographer John Nelson used NASA’s SpotTheStation website to learn when the International Space Station would make a high pass in his sky. This image is the result.

Peering to the Milky Way’s far side

Astronomers use parallax to directly measure the distance to a star-forming region on the opposite side of our Milky Way galaxy, nearly doubling the previous distance record.

Happy Friday the 13th

When a common year of 365 days starts on a Sunday, as it did this year, 2 Friday the 13ths are inevitable. The 1st one was in January and the 2nd in October.