Space

Oh sure, the Cassini spacecraft has been orbiting Saturn since 2004, capturing breathtaking images of the beringed gas giant and illuminating a once-obscure pocket of our solar system for the sake of scientific inquiry.

But — you're surely asking — what good is all that if the craft hasn't taken any quality photographs of space ravioli?

A small, faint star relatively close by is home to seven Earth-size planets with conditions that could be right for liquid water and maybe even life.

The discovery sets a record for both the most Earth-size planets and the most potentially habitable planets ever discovered around a single star.

Scientists predict that a pair of stars in the constellation Cygnus will collide in 2022, give or take a year, creating an explosion in the night sky so bright that it will be visible to the naked eye.

If it happens, it would be the first time such an event was predicted by scientists.

Updated 5 p.m. ET

The first American to orbit the Earth has died. John Glenn was the last surviving member of the original Mercury astronauts. He would later have a long political career as a U.S. senator, but that didn't stop his pioneering ways.

Glenn made history a second time in 1998, when he flew aboard the shuttle Discovery to become the oldest person to fly in space.

Glenn was 95 when he died; he had been hospitalized in an Ohio State University medical center in Columbus since last week.

They aren't saying it's alien, but they are saying it's "interesting."

The SETI Institute — the private organization that looks for signals of extraterrestrial life — has announced that it is investigating reports of an unusual radio signal picked up by Russian astronomers.

The signal was detected on a much wider bandwidth than the SETI Institute uses in its searches, and the strength of the received signal was "weak," SETI Institute astronomer Seth Shostak wrote in a blog post.

National Weather Service Paducah, via Twitter

Look up tonight and you might see the International Space Station. The National Weather Service in Paducah shared a Tweet with approximate times and degrees, per NASA's Spot the Station data. 

Far from our galaxy, in the vast darkness of space, two massive black holes merged into a single, larger hole.

And now researchers say they have detected rumblings from that cataclysmic collision as ripples in the very fabric of space-time itself. The discovery comes a century after Albert Einstein first predicted such ripples should exist.

The astronomer whose work helped kick Pluto out of the pantheon of planets says he has good reason to believe there's an undiscovered planet bigger than Earth lurking in the distant reaches of our solar system.

Scientists have unveiled the best photos of Pluto and its moons that humanity is likely to see for at least a generation. These images were taken Tuesday by NASA's New Horizons space probe as it hurtled past Pluto at more than 30,000 miles per hour.

Since its discovery in 1930, Pluto has revealed itself to be an oddball world. It's smaller than our own moon, and it orbits at an angle relative to the plane of the solar system. Because of its size and distance, even the Hubble Space Telescope could only make it out as a brown smudge, billions of miles away.

New images of Pluto have arrived from a NASA space probe, and they're already allowing scientists to update what we know about the dwarf planet — such as its size. NASA's New Horizons probe has traveled more than 3 billion miles to send photos and data about Pluto back to Earth.

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