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Scientists Explain &#39;Scratch Marks&#39; on Mars


Scientists Explain
'Scratch Marks' on Mars
NEW STUDY
Oct 27, 2017 11:47 AM CDT

Scientists Explain 'Scratch Marks' on Mars

Levitating dry ice causes deep gullies: scientists

(Newser) - No, a giant cat has not been clawing at the surface of Mars, though it might look like that. According to scientists, "scratch marks" or linear gullies on the Martian plains of Hellas Planitia were caused not by life forms but by dry ice—in fact, levitating dry ice....

Massive Lava Tubes Could Shelter Humans on Moon
Massive Lava Tubes Could
Shelter Humans on Moon
New Study
Oct 18, 2017 1:54 PM CDT

Massive Lava Tubes Could Shelter Humans on Moon

Researchers say they've found intact lava tubes below the moon's surface

(Newser) - Thanks to a study in Geophysical Research Letters , we now know where the first human settlement on the moon could be built—a massive lava tube potentially extending miles below the surface. Astronauts haven't been able to spend more than three days on the moon—which lacks Earth's...

China's Space Lab Could Fall at Any Time

Most will burn up in atmosphere, but chunks of it could land on Earth

(Newser) - Look up and you might see a bird, a plane, or 200-pound chunks of China's space lab falling from the sky. Actually, the chance of that last one is remote, but technically possible, and now more than ever. China acknowledged last year that its Tiangong-1 lab, launched in 2011,...

Repeating Signal From Deep Space Heard Again

FRB 121102 likely a natural occurrence

(Newser) - Astronomers have detected a rare radio signal that originated about 3 billion years ago in a galaxy far, far away. And as one expert puts it, the source is "kind of perplexing." Fast radio bursts, millisecond-long pulses of radio emission from beyond our galaxy, were first discovered a...

Asteroid Just Flew by Earth in Record-Setting Fashion

Astronomers get first up-close look at 'Florence'

(Newser) - There was no reason to fret, but perhaps reason to be wowed: "Florence," an asteroid stretching an estimated 2.7 miles wide, became the largest known asteroid to come as close as it did to our planet when it whizzed by Friday at 8:06am EDT. But though...

What to Expect From This Weekend's Perseid Meteor Shower

NASA debunks a rumor

(Newser) - Last year's Perseid meteor shower was an extravaganza . Don't expect the same this year. While astronomers are expecting a decent 150 meteors per hour during peak hours between midnight and dawn on Aug. 12 and 13—a little less than the 200 per hour visible in 2016—NASA'...

Your Tweet Could Reach Outside Our Solar System

NASA accepting anniversary messages for Voyager 1

(Newser) - Your words could reach out of our solar system—no gigantic megaphone necessary. NASA is hosting a contest that will see a message from one lucky Earthling sent to Voyager 1, which is hurtling through interstellar space. Entrants are invited to submit an "uplifting" message of 60 characters or...

Wish You Were a Jedi? NASA Gig Might Be for You

NASA seeking new 'planetary protection officer'

(Newser) - Want to become a Jedi? This is probably as close as you could possibly get: NASA is looking for someone to protect Earth and other planets in our known universe. The agency is accepting applications for the full-time post of "planetary protection officer," a position created after the...

We Thought Mars Was Toxic. We Had No Idea

Chemicals on surface, UV light kill bacteria in seconds: study

(Newser) - A new study might throw a wrench into plans to establish a human colony on Mars, whose surface is "more uninhabitable than previously thought." Indeed, the Red Planet is covered in a "toxic cocktail" of chemicals that, when combined with UV light, are capable of destroying any...

Close Encounter With Jupiter's 'Red Spot' Is Imminent

Juno spacecraft will 'dive' into celestial storm on July 10

(Newser) - NASA's Juno spacecraft will celebrate its first birthday circling Jupiter with the first close-up early next week of the gassy planet's Great Red Spot, Phys.org reports. The "spot" is actually an epic, 10,000-mile-wide storm that has likely been swirling above our solar system's biggest...

'Nemesis' Was Once Likely Part of Our Solar System

Scientists say our sun almost certainly had a twin long ago

(Newser) - Did the sun have an "evil twin" that wreaked havoc on Earth, perhaps obliterating the dinosaurs? Scientists think they can answer at least part of that question with near certainty: Yes, the sun had a twin, the Telegraph reports. Whether it was "evil" remains up in the air....

40-Year-Old Signal From Space Is Finally Explained
40-Year-Old Signal From
Space Is Finally Explained
in case you missed it
Jun 10, 2017 11:30 AM CDT

40-Year-Old Signal From Space Is Finally Explained

Astronomer says it was 'a natural phenomenon,' not aliens

(Newser) - In 1977, a radio telescope recorded a 72-second signal coming from the direction of the constellation Sagittarius. Stunned, the astronomer who observed it wrote "Wow!" on the readout. Since it couldn't be explained, plenty argued the signal was proof of life beyond our planet. After 40 years,...

This Is Not a Bullet Hole. This Is Mars

Orbiter spots deep pit at Red Planet's south pole

(Newser) - Mars is the solar system's equivalent of a pock-marked teenager, with a surface dotted by countless craters and pits left by meteors, floods, and volcanoes. But there's one newly discovered pit that scientists just can't make sense of, reports Science Alert . It's a massive hole—believed...

Super Telescope Hopes to Unlock Secrets of Space

Extremely Large Telescope will go online in 2024

(Newser) - Scientists just got one step closer to unlocking the mysteries of the cosmos. With much fanfare, construction of the world's most powerful telescope kicked off on Friday in northern Chile, Reuters reports. When the $1.1 billion instrument goes online in 2024, proponents say it will revolutionize knowledge of...

Rocket Reaches Space in Historic First for Country

Welcome to the space club, New Zealand

(Newser) - New Zealand just joined a very exclusive club, shared by only 10 others. According to the Deccan Chronicle , private company Rocket Lab's 56-foot test craft, Electron, blasted off from its facility on the Mahia Peninsula, located on the east coast of the North Island, adding New Zealand to the...

Hawking: Actually, We Have 100 Years to Escape Earth

Eric Mack thinks that's a bit silly

(Newser) - Stephen Hawking is giving humanity a tall order: Colonize Mars in the next century or watch as life on Earth fizzles out. After last year claiming that humans have 1,000 years left on Earth , Hawking says in a new documentary that we instead have about 100 years until we'...

Cassini Mission to Saturn Will End in Death, Discovery

The spacecraft will soon plunge into Saturn itself

(Newser) - Two decades after putting Earth in its rear-view mirror, the Cassini spacecraft is preparing to wrap up its mission to Saturn—and that means plunging to its death in the planet's atmosphere, according to a press release . Cassini has been orbiting Saturn since 2004, sending back information on the...

Report: China Developing Spaceship for Lunar Mission

Advanced spaceship will have space for multiple astronauts

(Newser) - China is developing an advanced new spaceship capable of both flying in low-Earth orbit and landing on the moon, according to state media. The newspaper Science and Technology Daily cited spaceship engineer Zhang Bainian as saying the new craft would be recoverable and have room for multiple astronauts, the AP...

Space Station Is About to Get Much, Much Cooler

Cold Atom Lab is coming in August

(Newser) - You're about to feel much kinder toward Earth's chilly winter months. This summer, the International Space Station will become host to the coldest spot in the universe when NASA delivers a chamber that is more than 100 million times colder than deep space, which is itself far chillier...

NASA Loses Fight Over Priceless Bag of Moon Dust

Illinois woman official owner of Apollo 11 space bag

(Newser) - At first glance, the round, white bag looks unremarkable, even a little battered, with a lengthy tear on the bottom, reports the Houston Chronicle . But it's now the official gem of Nancy Lee Carlson's collection of space memorabilia. After a yearlong legal battle , a judge ruled that the...

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