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There's a big, salty lake on Mars! Yeah, that's huge. Here's what we know.

Holy cow, there's water on Mars!

An artist's rendition of the European Space Agency's Mars Express orbiting the Red Planet. Photo by AFP/Getty Images.

This is not a drill, Earthlings. It looks like our celestial neighbor has a big 'ol lake on it.

Er, maybe I should say, a big 'ol lake in it.

Italian scientists claim they've detected a large body of liquid — spanning about 12.5 miles across — submerged roughly a mile beneath a layer of rock and ice on the planet's south pole.

"Whoa" is right.

This isn't the lake! But this pic, taken by the European Space Agency's Mars Express, does show a Martian river valley where water likely once flowed — a long, long time ago. Photo by ESA/AFP/Getty Images.

These brainy folks spent the last two years sorting through data collected from the European Space Agency's Mars Express spacecraft. Liquid H2O is the only feasible answer to what their radar's seeing.

As Roberto Orosei from the Italian National Institute for Astrophysics put it, "I really have no other explanation."

It must be water.

They're not exactly sure how deep the lake is.

But from what they can gather, the water isn't "some kind of meltwater filling some space between rock and ice, as happens in certain glaciers on Earth," according to Orosei, lead author of the study that produced the findings. It's a legit body of water.

Even though scientists know the lake is frigid cold — certainly well below freezing — its super salty consistency has likely lowered the melting point so that the water stays in liquid form.

Scientists have long suspected Mars was once a whole lot wetter than it is today.

Given that the planet's rocky, freeze-dried surface is scarred from what appears to be waterways from billions of years ago, scientists have gathered the Red Planet was once a lot more blue.

Mars' surface is one dry place these days. Photo by ESA via Getty Images.

But liquid water is the key to life as we know it. So if it's still on Mars ... well, you can put two and two together.

But let's not get ahead of ourselves!

These findings certainly don't prove Martians are paddle-boarding around their planet's south pole.

"We are not closer to actually detecting life," Dr. Manish Patel of the Open University told BBC News. "But what this finding does is give us the location of where to look [for potential life] on Mars."

"It is like a treasure map," Patel concluded. "Except in this case, there will be lots of 'X's marking the spots."

Let's get to searching, Earthlings.

Heroes

19 amazing things you don't want to miss in the night sky in 2016.

Eclipses and meteors and supermoons, oh my!

If you're a night owl who loves stargazing, 2016 is going to be a busy year for you. This year is packed full of remarkable sights — including three supermoons, two eclipses, and dozens of meteor showers. Some of them you'll need a telescope or binoculars to see, but many are visible with your naked eye alone.

Here are the things we'll be watching for in the night sky through the rest of 2016:

1. In March, Jupiter will come closer to Earth than it ever will in the next two years.

Image by NASA, ESA, and A. Simon/Wikimedia Commons.

On March 8, Jupiter reaches opposition (astronomy-speak for "the time when its orbit around the sun brings it closest to Earth"). You’ll be able to see the planet through binoculars or a telescope — if you have the latter you might be able to see its moons or the Great Red Spot).

Then on March 9, skywatchers in parts of Sumatra and Indonesia can grab their pinhole projectors to watch 2016's only total solar eclipse. If you're not able to grab a last-minute ticket to Palembang — don't worry. The next total solar eclipse on Aug. 21, 2017 will be visible across a huge part of the United States.

2. Break out your macro lenses to photograph April's "minimoon."

Image by NASA Goddard Space Flight Centre/Flickr.

There are three "supermoons" in 2016, but only one "minimoon." On April 21, the moon will be at "apogee," its furthest point from Earth. That's about 10,000 more miles away than normal and 30,000 more miles away than during a "supermoon."

On April 9, skywatchers with powerful telescopes will be able to see the planet Uranus as it reaches "conjunction" and starts to pass behind the sun. This is the perfect time to brush off your best "Uranus" jokes from fourth grade (to get you started, here's one of my personal favorites).

April 22 will bring the peak of the Lyrid meteor shower. Like August's Perseid meteor shower, these meteors are bright, slightly blue, and often leave long trails. In an average year, about 10-15 meteors can be spotted in the sky, but it may be harder to see them this time because of the full moon.

3. In May, Mercury will transit the sun for the first time in a decade.

Image via ESA/NASA/SOHO.

Skywatchers in the southern hemisphere are in for a treat May 6-7 with the peak of the Eta Aquarid meteor shower. This shower is usually good for about 30 meteors an hour — but you might be able to see even more since it's happening during a new moon when the skies will be much darker.

One of the most anticipated astronomical events of 2016 will happen on May 9, when the planet Mercury passes in front of the sun for the first time in a decade! Mercury is tiny, so you won't be able to see its path across the sun with the naked eye or through a pinhole projector — you'll need a refracting telescope or one with a solar filter. Definitely do not stare directly into the sun trying to see it. Check out your local astronomy center or skywatching group to see if they're doing public viewings, or if you can wait, NASA will have plenty of photos afterward — like this collection from 2012's transit of Venus.

May 21 will bring 2016's first blue moon. Sadly, it won't appear blue (unless Instagram filters count); that's just the name for the second full moon in a month.

On May 22, the planet Mars reaches "opposition," also known as its closest point to Earth of the year. If you have a telescope or binoculars, this will be a good night to break them out and see the red planet in all its glory. The last time it was at opposition was 2003.

4. If you've saved up for binoculars or a telescope, June is a great month to break them in.

Image from NASA/JPL/Space Science Institute.

Like Mars a few weeks earlier, Saturn's orbit will bring it closest to Earth on June 3. Skywatchers with home telescopes or medium-to-high-powered binoculars should be able to see Saturn's famous rings — and maybe even a few of her moons too.

5. Join NASA as Juno reaches Jupiter in July.

Image by NASA, ESA, and A. Simon/Wikimedia Commons.

Our solar system's largest resident will get a new visitor on July 4 with the arrival of NASA's Juno orbiter. Over the next two years, Juno will orbit Jupiter 37 times, collecting information about the planet's atmosphere, magnetosphere, and water content. You can learn more about the mission here.

6. Watch the world's most famous meteor shower in August.

Image by Tucker Hammerstrom/Flickr.

On Aug. 11-12, grab a friend, a blanket, and a bottle of wine and settle in for a late night sky spectacle courtesy of the Perseid meteor shower. Made of dusty bits from comet Swift-Tuttle, Perseid meteors appear as fast-moving bright blue streaks across the night sky.

This year is shaping up to be a particularly great show — some astronomers predict as many as 150 meteors will be visible every hour. Plus, with the moon at only a quarter-full (and setting shortly after midnight for folks in the Northern Hemisphere), the sky will be very dark. As astronomers say: Less light in the sky, more meteors to catch your eye. OK, they don't really say that. But they should.

On Aug. 27, early evening skywatchers will be able check out Venus and Jupiter in conjunction. It's the closest the two bright planets will be visible all year.

7. See an IRL "Ring of Fire" in September's partial solar eclipse.

Looking directly at the "ring of fire" of a partial solar eclipse burns burns burns ... your retinas. Image by Masaru Kamikura/Flickr.

On Sept. 1, skywatchers across Africa will be treated to an annular (or partial) solar eclipse. In this type of eclipse, the moon partially passes between the sun and the Earth, creating what some astronomers call the "ring of fire."

The path of the eclipse crosses Gabon, the Republic of the Congo, the Democratic Republic of the Congo, Tanzania, Madagascar, and the tiny island nation of Réunion. In the past, generous astronomers have live-streamed images of eclipses; hopefully someone will do the same this year.

8. The first of three supermoons will rise in October.

Image by Bureau of Land Management/Flickr.

Oct. 16 brings the first of the years' three supermoons. During a supermoon, the moon's orbit brings it closer to Earth, making it appear larger and brighter than usual. It's a great time to dust off your camera and test out some night shots — here are some tips from a veteran lunar photographer.

Oct. 30 will bring 2016's only black moon, also known as the second new moon in a calendar month. If it is a clear night, black moons are a great chance to look for deep sky objects like the Andromeda galaxy or the Orion nebula.

9. Round out 2016 with two meteor showers and two more supermoons.

Image by Joshua Tree National Park/Flickr.

Nov. 14 brings the second supermoon of 2016 and the closest full moon to Earth since 1990. You won't want to miss this one — it's the closest the moon will get to Earth until 2021.

Skywatchers in the northern hemisphere should bundle up warm on Nov. 17 to take in the Leonid meteor shower. These meteors are my favorite every year — they're usually large, yellowish-green, and slow moving as they streak across the sky. The moon will be pretty bright in the night sky, but you can still expect to see about 10-15 meteors per hour.

Dec. 12 is the last full moon of the year and 2016's final supermoon. For astronomy fans, it'll be a mixed blessing since the bright light of the supermoon will blot out some of the Geminid meteor shower two days later. At its peak around 2:00 a.m. local time Dec. 13, the Geminid meteor shower can bring up to 120 meteors an hour into our atmosphere. They burn fast, bold, and bright — not great for photography, but perfect for wishes.

Happy skywatching!

Heroes

4 women at NASA are currently training to become the first to walk on Mars.

NASA's class of 2013 might just have what it takes to visit the red planet and make history.

Astronauts are dreamers.

Astronauts look up to the stars and say, "I want to go there." Not metaphorically either, like a grandparent or graduation speaker might imply. They literally want to go up there and look around. Luckily for those dreamers, if they work hard enough they actually can do it.

But let's be clear. It's hard to be an astronaut. Really hard.

You think just anyone gets to carry around that lunchbox? Think again. Photo by Shamil Zhumatov/AFP/Getty Images.

A particular combination of skill, education, experience, and "The Right Stuff" is what's necessary to go to space.

In 2013, eight people became NASA's newest class of astronauts. For the first time, half of them are women.

Nicknamed "the Eight Balls" (let's not think too much about how a team with four men and four women came up with that name), the 2013 class represents the future of NASA and space travel for more than one reason.

NASA's Class of 2013. Top from left: Jessica Meir, Josh Cassada, Victor Glover, Andrew Morgan, and Christina Hammock. Bottom from left: Anne McClain, Tyler Hague, and Nicole Aunapu Mann. Photo from NASA/Wikimedia Commons

First, the class represents what you might call a "giant leap" for women in space.

Although women have been going to space since 1963, there has never been a class of NASA astronauts with a 1:1 male-to-female ratio. It's indicative not only of an evolving administration that seeks to find more gender diversity each year, but also the rising number of women in science, a field that is still largely male-dominated.

Second, members of the Eight Balls might be among those selected to go to Mars.

That's right. We're going to Mars! Eventually. It'll take at least 15 years before NASA is even ready to hit the big red launch button (they do have a big red launch button, right?), but when the class of 2013 was selected, NASA announced that they'd be among those in the running for the inaugural trip to the red planet.

Understandably, the Eight Balls are pretty excited.

"I grew up in Spokane, Washington, and I can't recall ever not wanting to be an astronaut," astronaut Anne McClain told Glamour Magazine.

McClain, like her colleagues, was chosen from 6,100 other qualified applicants. She's flown attack helicopters on the front lines of Iraq and has master's degrees in both international security and aerospace engineering (just in case you were wondering what the competition is like).

Astronaut Anne McClain in front of her attack helicopter. I don't know which is more badass. Photo via NASA/Youtube.

Rounding out the other women in the class are Nicole Aunapu Mann, who served multiple tours in Iraq flying fighter jets with the Marine Corps; Christina Hammock Koch, who spent a year in the south pole supercooling telescopes with 10,000 gallons of liquid helium; and Jessica Meir, who has a Ph.D. in marine biology and experience diving under several feet of ice in Antarctica.

15 or so years from now, these women could be among the first human beings to set foot on Mars.

Despite the fact that women have been going to space for over 50 years, there are still people who question the skills and abilities of women who dream of going to space. It wasn't that long ago that Russia's female astronauts were questioned about their makeup before an eight-day stay in a mock spacecraft to prepare for a moon mission.

Make no mistake, these women aren't any less skilled or prepared than their male counterparts just because they're women. These women are highly trained. They've got The Stuff. They've got What It Takes.

"If we go to Mars, we'll be representing our entire species in a place we've never been before," McClain says, "To me it's the highest thing a human being can achieve."

Indeed, a successful trip to Mars would probably afford human beings the most bragging rights we've had since we came down from trees, stood up on our hind legs, and invented the slap-chop.

Besides, as McClain points out, when it comes to venturing into the great reaches of outer space, "We're all just part of team human."

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6 spot-on things Jane Goodall said about inequality and saving the planet.

Jane Goodall is one incredible woman.

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Discovery - Racing Extinction

You wouldn't expect Jane Goodall, who is basically the human form of Mother Earth, to talk about Mars.

But she makes a good point.

"The photographs obtained by that little robot that's crawling around the surface of Mars makes it very clear that the planet is not a hospitable environment for human colonization," the eco-octogenarian said during a recent speech at U.S. Department of State.

"We have to make do with planet Earth, and planet Earth has finite natural resources."


The red planet was just one of many unexpected topics Goodall talked about that didn't involve chimpanzees (except they all totally kind of do, in a way).

Here are six telling quotes from her speech that put a ton of big thoughts into perspective.

1. First and foremost, Goodall laid out how absurd it is that humans are even capable of ruining the planet.

Because when you think about it, it's the epitome of self-destruction.

Photo via Erik (HASH) Hersman/Flickr.

“How is it possible that the most intellectual creature to ever walk planet Earth is destroying its only home?"

As we mentioned, she brought up the fact our ventures to Mars have confirmed the red planet is not, in fact, a hospitable one for human life. And that means "we have to make do with planet Earth."

2. She told white folks that they gotta slow their roll when they want to help other places.

Throughout her speech, Goodall frequently discussed the success of her institute's TACARE program that, since its inception, has focused on listening to local communities first and then working with them to make better food, education, and health initiatives.

Photo by Nick Step/Flickr.

Unfortunately, that's not the same approach other aid groups have taken.

TACARE "began not in the way that so much well-intentioned but unfortunate aid has been delivered," she said. "It wasn't a bunch of white people arrogantly going out to these villages and telling them what we were going to do to make their lives better."

3. Goodall explained how her institute connected the dots between fighting poverty and fighting for the environment.

Because, in many respects, they're actually the same fight.

Photo via Festival della Scienza/Flickr.

Goodall explained to NPR how the correlation between financial desperation and environmental recklessness became increasingly clear in Tanzania, as there was "no way we can even attempt to save these precious Gombe chimpanzees" unless the needs of the people were met first.

As those people in Gombe were too poor to buy food, they were forced to cut down trees for money; their families needed to survive. This, in turn, destroyed the same forests chimpanzees depend on.

“Poverty is a huge force in the destruction of the environment, because when you're very poor, you're going to cut down the last trees in order to grow food to feed your family."

4. But poverty wasn't the only factor affecting Tanzania's forests. Gender equality, believe it or not, played a role too.

The correlation between empowering women and saving the environment may not be the most obvious. But Goodall detailed how her institute's work helping women in Gombe ended up saving trees (and her chimps' home).

Photo via Franz Johann Morgenbesser/Flickr.

After gaining the communities' trust, TACARE began prioritizing women's reproductive health and family planning services — a move that was "well-received by the villagers" because they, too, realized a growing population was leading to damaged farmland and unsustainable growth.

Family sizes needed to decrease. It was vital.

"The reason all the trees had gone, the reason the land was overused, was the sheer numbers of people."

The Jane Goodall Institute began helping girls and women access education through scholarships. As Goodall referenced in her speech, providing girls and women with access to an education has been a proven method in shrinking family sizes across the globe.

5. If you believe every person truly matters, the world can change. Just ask young people.

“Everywhere I go, there are young people with shining eyes, wanting to tell Dr. Jane what they've been doing to make the world a better place," she explained at the Department of State. That, she said, keeps her optimistic.

Goodall's Roots & Shoots program, aimed at getting youth involved in the protection of the Earth and its people, has expanded greatly since launching in 1991. Beginning with just 12 students in Tanzania, the program now works in 140 countries around the world.

Its fundamental message? “Every single individual matters," Goodall said during her speech. "Every single individual makes a difference, every day."



6. Because of both the human and environmental progress she's witnessed through her own institute, Goodall has high hopes for the future.

And it really all comes down to people.


Photo via Kafka4prez/Flickr.

“That indomitable human spirit — that's in every single one of us."

She's got a point. We humans really are one-of-a-kind.

As Goodall expressed so well, each one of us has the power to produce change.

And it can start with just one click. You can learn more about and support the Jane Goodall Institute by visiting the organization's website.

Watch Goodall's speech in front of the Department of State below:

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