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When you think of space exploration, NASA or the European Space Agency probably leap to mind.
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But a lot of incredible missions come from other parts of the world, too.
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Like, Japan's JAXA returned the first samples from an asteroid, and Russia's Roscosmos
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has a flawless record delivering astronauts to the International Space Station.
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One country you may not have thought of is India, but the Indian Space Research Organisation,
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or ISRO, is on its way to becoming a leader in space exploration — and they're just getting started.
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When it comes to launching spacecraft, ISRO has a great track record.
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Back in February, they made global headlines when a single Indian rocket launched 104 satellites
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— a new record.
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Most were shoebox-sized cubesats, but the rocket successfully put them all on the right
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paths, one every few seconds — all while traveling at more than 27,000 kilometers per hour!
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Thanks to their growing reputation, these satellites came from all over the world, including
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the U.S., Switzerland, Israel, and Kazakhstan.
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In 2008, ISRO also sent their first spacecraft to the Moon, where it did some basic science
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and proved their technology worked.
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But they truly arrived on the world space scene in 2014, when their Mars Orbiter Mission
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entered orbit around — you guessed it! — Mars.
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That put them in a tiny club of interplanetary nations alongside Russia, the U.S., and the
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European Union.
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And on top of that, ISRO were the only ones to get into Mars orbit successfully on their first try!
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That by itself is a real accomplishment, but ISRO also had big plans to collaborate with
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NASA's MAVEN spacecraft.
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MAVEN showed up at Mars at about the same time, and both orbiters were tasked with studying
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the thin Martian atmosphere.
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While MAVEN's orbit was designed to skim near the planet, the orbit for the ISRO mission
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could take the spacecraft more than 500 times farther away, allowing researchers to piece
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together a complete view of the atmosphere.
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The Mars Orbiter Mission even contained a key piece of technology NASA's satellite
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didn't have: a methane detector.
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Here on Earth, methane is primarily created from life — like farting and burping cows
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— and with ISRO's methane detector, researchers hoped to map the global distribution of the
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gas all around Mars.
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At least, that was the plan.
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Unfortunately, because just getting to Mars is such a challenge, ISRO considered the whole
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mission a so-called “technology demonstration”.
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So most of their efforts went into things like interplanetary communication… not scientific instruments.
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Some of their equipment worked great, but things probably didn't turn out so well
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for the methane detector.
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As of 2016, the mission hadn't found any methane in the Martian atmosphere.
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But since other missions, like Curiosity, have found trace amounts of it, that could
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mean the ISRO orbiter just wasn't sensitive enough, or that there was another issue.
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Now, ISRO is developing a much more capable Martian satellite, so they could learn a lot
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more in the 2020s.
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And the ESA and Roscosmos's Trace Gas Orbiter will be investigating the methane situation
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in the meantime.
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Still, ISRO's first Mars mission was a success in a lot of way, and the organization is now
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ready for even more exploration.
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And until then, they're also making major contributions to astronomy, with a space telescope
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called AstroSat that launched in 2015.
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You can think of AstroSat kind of like a mash-up of NASA's Hubble Space Telescope and Chandra
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X-Ray Observatory.
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It's way smaller than either of those, but can still accomplish something really cool:
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observing a single astronomical source in a whole bunch of wavelengths at once!
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“Astronomical source” is just fancy science-talk for something in space that emits, well, anything.
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In this case, AstroSat can find something we see in the sky and study it in visible,
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ultraviolet, and X-ray light — all at the same time!
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To do something like that with Hubble and Chandra would require tons of coordination,
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but AstroSat makes it happen for everything it looks at.
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And earlier this year it contributed behind the scenes to a story you probably heard a lot about.
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This June, LIGO detected gravitational waves, or ripples in space-time caused by merging
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black holes, for only the third time.
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And a day after they detected them, an observatory in Hawaii saw a flash in the very same part
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of the sky.
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At first, scientists thought this flash was probably the afterglow of the merging black
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holes — but it wasn't.
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Follow-up observations from AstroSat helped determine that a distant gamma ray burst — probably
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from a supernova — had just happened to appear in the same part of the sky at almost
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the exact same time.
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Talk about astronomical odds, am I right?
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Without AstroSat, it probably would have been a lot harder to figure out what that flash was.
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Squishing two space telescopes into one is just one example of how ISRO puts its own
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unique twist on space exploration, and they're not slowing down anytime soon.
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In addition to their planned Mars mission, ISRO is getting ready to land on the Moon,
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and is working on missions to explore Venus, the Sun, and even Jupiter.
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It's an ambitious plan, but they're off to a great start and, when it comes to exploring
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space, it's always the more, the merrier!
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Thanks for watching this episode of SciShow Space, and special thanks to our patrons on
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Patreon for making it happen!
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If you'd like to support the show, you can go to patreon.com/scishow.