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20 Years of Changing Seasons on Earth Captured into 2½ Minutes by NASA

NASA captured 20 years of changing seasons in a striking new global map of the home planet that shows Earth's fluctuations as seen from space

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The Changing seasons of the Earth
The Changing seasons of the Earth has been captured by NASA. Wikimedia.
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NASA captured 20 years of changing seasons on Earth in a striking new global map of the home planet.

The data visualization, released this week, shows Earth’s fluctuations as seen from space.

The polar ice caps and snow cover are shown ebbing and flowing with the seasons. The varying ocean shades of blue, green, red and purple depict the abundance — or lack — of undersea life.

“It’s like watching the Earth breathe. It’s really remarkable,” said NASA oceanographer Jeremy Werdell, who took part in the project.

Two decades — from September 1997 to this past September — are crunched into 2½ minutes of viewing.

Werdell finds the imagery mesmerizing. “It’s like all of my senses are being transported into space, and then you can compress time and rewind it, and just continually watch this kind of visualization,” he said Friday.

Werdell said the visualization shows spring coming earlier and autumn lasting longer in the Northern Hemisphere. Also noticeable to him is the receding of the Arctic ice caps over time — and, though less obvious, the Antarctic, too.

On the sea side, Werdell was struck by “this hugely productive bloom of biology” that exploded in the Pacific along the equator from 1997 to 1998 — when a water-warming El Nino merged into cooling La Nina. This algae bloom is evident by a line of bright green.

In considerably smaller Lake Erie, more and more contaminating algae blooms are apparent — appearing red and yellow.

All this data can provide resources for policymakers as well as commercial fishermen and many others, according to Werdell.

Programmer Alex Kekesi of NASA’s Goddard Space Flight Center in Maryland said it took three months to complete the visualization, using satellite imagery.

Just like our Earth, the visualization will continually change, officials said, as computer systems improve, new remote-sensing satellites are launched and more observations are made. (VOA)

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The Aborted Mission To Relaunch In December: NASA

In August, a hole appeared in a Soyuz capsule docked to the ISS that caused a brief loss of air pressure and had to be patched.

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Russian Rocket
Astronaut Anne McClain, left, is seen during training at the Neutral Buoyancy Laboratory in Houston, Texas. VOA

The American astronaut who will hitch the first ride on a Russian rocket since last month’s aborted launch and dramatic emergency landing is confident that her scheduled trip in December on a rocket that she calls a “workhorse” will go smoothly.

Astronaut Anne McClain, along with a Russian cosmonaut and a Canadian astronaut, will man the Dec. 3 mission. It will be the Russian-made Soyuz-FG’s first crewed flight since Oct. 11, when U.S. astronaut Nick Hague and a Russian cosmonaut landed unharmed on the Kazakh desert steppe after the rocket bound for the International Space Station failed in mid-air two minutes after liftoff.

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Specialists watch broadcasts from the Soyuz spacecraft showing astronaut David Saint-Jacques of Canada, Oleg Kononenko of Russia and astronaut Anne McClain of the U.S. attending the final qualification training for their upcoming space mission in Star City near Moscow, Russia. VOA

The National Aeronautics and Space Administration has relied on Russian rockets to ferry astronauts to the space station since the United States retired its Space Shuttle program in 2011, though the agency has announced plans for test flights carrying two astronauts on commercial rockets made by Boeing and SpaceX next April.

“I do see the incident that happened on Oct. 11 with our launch abort not as a failure but as a success,” McClain told Reuters in a telephone interview from Russia. “It actually bolsters my confidence in the rocket and in the processes that we have.

“We’re confident in the vehicle and getting back to it,” McClain said of the Soyuz rocket, which she called “the workhorse of the space program.”

After lifting off from Kazakhstan’s Soviet-era cosmodrome of Baikonur last month, a damaged sensor caused one of the rocket’s three booster stages to separate improperly, falling inward on the rocket and jolting it off its ascent two miles above ground, Russian investigators announced earlier this month.

Russian Rocket
The Soyuz MS-10 spacecraft carrying the crew of astronaut Nick Hague of the U.S. and cosmonaut Alexey Ovchinin of Russia blasts off to the International Space Station (ISS) from the launchpad at the Baikonur Cosmodrome, Kazakhstan. VOA

During Assembly

Video from inside the capsule showed the two men being shaken around at the moment the failure occurred, their arms and legs flailing. Russian cosmonaut Alexei Ovchinin can be heard saying, “That was a quick flight.”

The accident was the first serious launch problem experienced by a crewed Soyuz space mission since 1983, when a crew narrowly escaped before a launchpad explosion.

Also Read: NASA Grants $7 Mn For New Life Detection

In August, a hole appeared in a Soyuz capsule docked to the ISS that caused a brief loss of air pressure and had to be patched. Dmitry Rogozin, head of the Russian space agency Roscosmos, has said that it could have been made deliberately by someone during manufacturing or while the craft was in space.

McClain and two other crewmates will launch from the same launchpad in Baikonur, joining the space station’s current three-person crew. (VOA)