Why the Curiosity Rover is Forbidden From Collecting Water on Mars

In 2015 NASA announced that they found definitive evidence of liquid water on Mars. But while obtaining a physical sample would revolutionize science, it’s forbidden by international law. 

The Outer Space Treaty of 1967 prevents every nation on Earth from sending a mission, robot or human, close to a water source in the fear of contaminating it with life from Earth [PDF]. In its 140-million-mile journey from Earth to Mars, it’s possible that Curiosity has carried harmful microbes all the way from home. Even though NASA tries its best to sterilize all space-traveling equipment before launch by subjecting it to intense ultraviolet light, it still might harbor microbial hitchhikers.

In theory, NASA could turn up the heat and radiation to a level pretty much guaranteed to destroy any microbial life—but that could also end up wiping out the rover’s internal systems. "In order to be completely sterile, they'd have to use really powerful ionizing radiation or heat, both of which would damage the electronics,” University of New South Wales astrobiologist Malcolm Walter told Fairfax Media. "So they go as far as they dare."

Another issue that would prevent Curiosity from investigating the water source is the terrain itself. The slopes where the streaks formed are steep and therefore difficult to navigate. Future Mars rovers could be designed with this hurdle in mind, and they could also come equipped with DNA sequencers to test for life or 3D-printing capabilities to build smaller bots with little to no chance of being contaminated.


NASA/JPL/University of Arizona

Unfortunately, it’s too late for NASA modify the next generation of Mars rovers, which is set to launch in 2020. The European Space Agency says it plans to send an organic molecule analyzer on its 2018 ExoMars mission, though they still wouldn’t be able to test Martian water unless they could guarantee 100 percent sterilization.

[h/t: Science Alert]

Looking to Downsize? You Can Buy a 5-Room DIY Cabin on Amazon for Less Than $33,000

Five rooms of one's own.
Five rooms of one's own.
Allwood/Amazon

If you’ve already mastered DIY houses for birds and dogs, maybe it’s time you built one for yourself.

As Simplemost reports, there are a number of house kits that you can order on Amazon, and the Allwood Avalon Cabin Kit is one of the quaintest—and, at $32,990, most affordable—options. The 540-square-foot structure has enough space for a kitchen, a bathroom, a bedroom, and a sitting room—and there’s an additional 218-square-foot loft with the potential to be the coziest reading nook of all time.

You can opt for three larger rooms if you're willing to skip the kitchen and bathroom.Allwood/Amazon

The construction process might not be a great idea for someone who’s never picked up a hammer, but you don’t need an architectural degree to tackle it. Step-by-step instructions and all materials are included, so it’s a little like a high-level IKEA project. According to the Amazon listing, it takes two adults about a week to complete. Since the Nordic wood walls are reinforced with steel rods, the house can withstand winds up to 120 mph, and you can pay an extra $1000 to upgrade from double-glass windows and doors to triple-glass for added fortification.

Sadly, the cool ceiling lamp is not included.Allwood/Amazon

Though everything you need for the shell of the house comes in the kit, you will need to purchase whatever goes inside it: toilet, shower, sink, stove, insulation, and all other furnishings. You can also customize the blueprint to fit your own plans for the space; maybe, for example, you’re going to use the house as a small event venue, and you’d rather have two or three large, airy rooms and no kitchen or bedroom.

Intrigued? Find out more here.

[h/t Simplemost]

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How to See August’s Full Sturgeon Moon

It'd be pure lunacy to skip an opportunity to see this beauty.
It'd be pure lunacy to skip an opportunity to see this beauty.
mnchilemom, Flickr // CC BY 2.0

This summer has been an especially exciting time for avid sky-gazers—the NEOWISE comet flew close to Earth in mid-July, and the ongoing Perseid meteor shower is gearing up for its peak around August 11. Though full moons aren’t quite as rare, the sight of a glowing white orb illuminating the night is still worth a glance out your window.

When Is August’s Full Moon?

As The Old Farmer’s Almanac reports, the eighth full moon of 2020 will reach its peak at 11:59 a.m. EST on Monday, August 3. If that’s daytime where you live, you’ll have to wait for the sun to set that night, or you can catch it the night before—Sunday, August 2.

Why Is It Called a Sturgeon Moon?

Each month’s full moon has a nickname (or multiple nicknames), usually of folk origin, that coincides with certain plant, animal, or weather activity common at that time of year. January’s full moon, for example, was named the “wolf moon” because wolves were said to howl more often during January. June’s “strawberry moon” occurred when strawberries were ripe and ready to be picked.

Since people caught an abundance of sturgeon—a large freshwater fish that’s been around since the Mesozoic era—in the Great Lakes and Lake Champlain during this part of summer, they started calling August’s full moon the sturgeon moon. It has a few lesser-known monikers, too, including the “full green corn moon” (a nod to the approaching harvest season), and the slightly wordy “moon when all things ripen.”

[h/t The Old Farmer’s Almanac]