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New Crew Set for Space Station Launch Today

Three new crewmembers will launch toward the International Space Station (ISS) this evening (March 18), and you can watch all the spaceflight action live.

Three new crewmembers will launch toward the International Space Station (ISS) this evening (March 18), and you can watch all the spaceflight action live.

NASA astronaut Jeff Williams and cosmonauts Alexey Ovchinin and Oleg Skripochka are scheduled to blast off aboard a Russian Soyuz rocket today at 5:26 p.m. EDT (2126 GMT) from Baikonur Cosmodrome in Kazakhstan. You can watch the liftoff live here at, courtesy of NASA TV; coverage begins at 4:30 p.m. EDT (2030 GMT).

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If all goes according to plan, the trio's Soyuz spacecraft will reach the orbiting lab at 11:12 p.m. EDT tonight (0312 GMT on Saturday, March 19), less than six 6 hours after leaving Earth. The hatches between the newly docked Soyuz and the space station are scheduled to open at 12:55 a.m. EDT Saturday (0455 GMT), NASA officials said.

You can watch these arrival activities live here at as well, also courtesy of NASA TV. Docking coverage begins at 10:30 p.m. EDT (0230 GMT Saturday), and hatch-opening coverage starts at 12:30 a.m. EDT Saturday (0430 GMT).

When they float through the hatch and into the ISS, the newcomers will bring the orbiting lab back up to its full complement of six crewmembers. NASA astronaut Tim Kopra, Briton Tim Peake and cosmonaut Yuri Malenchenko have had the space station to themselves since March 1, when fellow space fliyers Scott Kelly, Mikhail Kornienko and Sergey Volkov departed for Earth.

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Kelly and Kornienko spent an unprecedented 340 straight days aboard the ISS, completing a mission designed to help lay the foundation for crewed journeys to faraway Mars.

During the 11-month mission, Kelly set an American record for the most total days spent in space - 520. But veteran space fliyer Williams will break that record on his upcoming ISS mission; when he lands about six months from now, Williams will have racked up 534 days of spaceflight experience, NASA officials said.

Williams is also embarking upon his third ISS mission, which is another American record.

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Williams, Ovchinin and Skripochka will soon be joined in orbit by a robotic visitor - the Cygnus cargo spacecraft, which is built by American company Orbital ATK. Cygnus is scheduled to launch on a resupply mission Tuesday night (March 22) and arrive at the space station four days later.

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The Soyuz TMA-20M Rocket Ready for Liftoff

15 years ago this week, the International Space Station accommodated its first crew members. Now, 180 months later, the orbiting outpost has not been uncrewed since, playing host to over 220 astronauts, cosmonauts and fee-paying space tourists.

Here are just a few of the highs and lows of humanity's most ambitious international endeavor in space.

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The space station awaiting NASA astronaut William Shepherd, center, and cosmonauts Yuri Gidzenko, left, and Sergei Krikalev, right, 15 years ago wasn’t the first outpost to orbit Earth, nor the first to host residents from the United States and its former Cold War foe, Russia. But unlike NASA’s 1970s-era Skylab and the series of Soviet stations that ended in 2001 with Mir, the International Space Station, or ISS, was a joint program from the get-go.

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Assembly began on Nov. 20, 1998 with Russia launching the Zarya control module, pictured here in the center with the shorter solar panel wings. Three space shuttle missions followed to install the Unity connecting node (located at the bottom in this image), deliver supplies and prepare the station for the arrival of the Russian-launched Zvezda service module, at top, with a Russian Progress cargo ship attached. Two more space shuttle missions followed with more equipment and supplies before the first station crew blasted off aboard a Russian Soyuz rocket on Oct. 31, 2000. The crew arrived at the station two days later to begin a 4.5 month-long mission.

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The first station crew, known as Expedition One, hosted two visiting crews of space shuttle astronauts and added the U.S. Destiny laboratory module to the growing outpost before their replacements arrived aboard another space shuttle mission on March 10, 2001. That handover marked the first in an unbroken string of crew rotations that have kept the station permanently staffed for 15 years. The current station crew, led by NASA astronaut Scott Kelly, is Expedition 45.

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During their 167-day flight, the Expedition Two crew, comprised of Russian cosmonaut Yury Usachev and NASA astronauts Susan Helms and James Voss, became de facto space ambassadors when Russia insisted on flying a privately paying tourist. NASA vehemently objected to Dennis Tito, an American businessman, flying with the Russian taxi crew delivering a fresh Soyuz capsule to the station. NASA said it was too early in the station’s ongoing development for non-professional astronauts, but in the end, Russia, which was charging Tito some $20 million for the trip, prevailed. Tito, left in above image, spent six days aboard the station. Since then, six other passengers have paid upwards of $40 million to visit the station. One tourist, Microsoft co-founder Charles Simonyi, flew twice.

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Station assembly continued at a steady pace until Feb. 1, 2003, when shuttle Columbia, on a rare, non-space station research flight, broke apart during its return to Earth, killing seven astronauts. Shuttle flights were immediately suspended, shifting sole responsibility for keeping the station staffed to Russia. The shuttle returned to flight in July 2005, but was grounded again for another year for more modifications. The STS-107 Columbia crew, left to right from top, David Brown, pilot William McCool, payload commander Michael Anderson, Kalpana Chawla, commander Rick Husband, Laurel Clark and Israeli astronaut Ilan Ramon.

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Heeding the advice of the Columbia accident investigation board, NASA decided to retire its remaining three space shuttles once construction of the space station was finished. After 21 post-Columbia shuttle missions to the station, plus one last servicing call to the Hubble Space Telescope, NASA grounded the fleet. Shuttle Atlantis, pictured above, completed the last flight on July 21, 2011. On the second to last mission, sister ship Endeavour delivered the station’s premier science experiment, a multi-national $2 billion particle detector known as the Alpha Magnetic Spectrometer. With the shuttles out of service, NASA again was dependent on Russia to fly crews to the station.

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As part of its post-shuttle planning, NASA embarked on a controversial, cost-cutting program to purchase flight services, rather than build and operate its own spaceships, for transportation to and from the station. Ultimately, two companies, Space Exploration Technologies, or SpaceX, and Orbital Sciences, which has since merged with another firm and is now known as Orbital ATK, began making cargo runs to the station. SpaceX got there first, with a test run in May 2012, pictured above. Astronauts aboard the station use a robotic arm to snare the capsule from orbit and berth it to the station. NASA also has given launch contracts and financial support to SpaceX and Boeing to fly station crew as well.

PHOTOS: Meet the Space Station's Resupply Fleet

With two new supply lines to the station, NASA was happily back making cargo runs to the station until launch accidents temporarily grounded both firms. Pictured above, an Orbital Antares rocket, carrying a Cygnus cargo ship, exploded minutes after liftoff from the Mid-Atlantic Regional Spaceport on Wallops Island, Virginia, on Oct. 28, 2014. The company plans to resume flights on a new version of Antares in 2016. Meanwhile, Orbital has purchased two rides for Cygnus capsules on United Launch Alliance Atlas rockets. SpaceX, which also flies commercial satellites on its Falcon 9 rockets, had a launch accident on June 28, 2015, during its seventh resupply run to the station. SpaceX is planning to resume flights in December, though its next station cargo flight is not expected until January at the earliest.

PHOTOS: 'Space Invader' Found on International Space Station

Despite launch accidents, political turmoil and financial concerns, the 15-nation station partnership has endured and become a model for future international programs to send astronauts and cosmonauts farther into space. In March, NASA and Russia began the first of what is expected to be series of year-long missions in an attempt to learn more about how spaceflight impacts the human body and mind. NASA astronaut Scott Kelly, pictured above, and Russian cosmonaut Mikhail Kornienko are serving as the first subjects, work that scientists hope will pave the way for three-year missions to Mars.

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