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NASA creates three basic components of the genetic code of life in a laboratory

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A research funded by the NASA Astrobiology Institute (NAI) and the NASA Origins of Solar Systems Programme has been able to create three basic components of RNA and DNA, thegenetic code of life on earth, in a laboratory.

The researchers discovered that an ice sample containing pyrimidine, when exposed to ultraviolet radiation under space-like conditions, produced the three essential ingredients of life – uracil, cytosine and thymine.

Pyrimidine, a ring-shaped molecule made up of carbon and nitrogen is the central structure for uracil, cytosine and thymine.

“We have demonstrated for the first time that we can make uracil, cytosine and thymine non-biologically in a laboratory under conditions found in space,” said Michel Nuevo, research scientist at NASA’s Ames Research Centre, Moffett Field, California.

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“Our experiments suggest that once the Earth formed, many of the building blocks of life were likely present from the beginning,” said Scott Sandford, another space science researcher at Ames.

The researchers found that if pyrimidine is frozen in ice containing ammonia, methanol or methane, it has a much higher chance of surviving the harmful radiation of the interstellar space.

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Parker Solar Probe Working As Planned: NASA Mission Controllers

Further instrument check-outs and deployments are scheduled in the coming days for the spacecraft.

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Several other designs on the spacecraft keep Parker Solar Probe sheltered from the heat. Flickr

NASA ‘s historic mission to solve the mysteries of the Sun which was launched aboard a United Launch Alliance Delta IV Heavy rocket on August 12 is operating according to plan, mission controllers have said.

As of 12 p.m. EDT on August 16, the Parker Solar Probe was 4.6 million kms from Earth, travelling at 62,764 kms per hour, and heading toward its first Venus flyby scheduled for October 3, 2018, Geoff Brown of Johns Hopkins University Applied Physics Lab, or APL, in Maryland, wrote in a NASA blog post on Friday.

The spacecraft will use Venus to slightly slow itself and adjust its trajectory for an optimal path toward the first perihelion of the Sun on November 5 this year.

“Parker Solar Probe is operating as designed, and we are progressing through our commissioning activities,” said Project Manager Andy Driesman of APL.

This solar probe is humanity’s first-ever mission into the Sun’s atmosphere, called the corona. Here it will directly explore solar processes that are key to understanding and forecasting space weather events that can impact life on Earth.

The mission has already achieved several planned milestones toward full commissioning and operations, according to the mission controllers.

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NASA’s Parker Solar Probe in Space. (IANS)

On August 13, the high-gain antenna, which Parker Solar Probe uses to communicate high-rate science data to Earth, was released from locks which held it stable during launch.

Controllers have also been monitoring the spacecraft as it autonomously uses its thrusters to remove (or “dump”) momentum, which is part of the flight operations of the spacecraft.

Managing momentum helps the spacecraft remain in a stable and optimal flight profile.

There are four instrument suites on board Parker Solar Probe, which will each need to be powered and readied for science data collection.

The FIELDS investigation, which consists of the most elements, went first. It was powered up on August 13 for two activities, Brown said.

First was the opening of the clamps which held four of the five FIELDS antennas stowed during takeoff.

These antennas will be deployed roughly 30 days after launch, and they will stick out from the corners of the spacecraft’s heat shield called the Thermal Protection System and be exposed to the harsh solar environment.

Parker solar probe
The spacecraft, launched from Cape Canaveral Air Force Station. IANS

Second, the spacecraft’s magnetometer boom was fully deployed. This boom contains three magnetometers and a fifth, smaller electric field antenna, all part of the FIELDS suite.

Also Read: India will Send a Manned Flight into Space by 2020: Modi

Further instrument check-outs and deployments are scheduled in the coming days for the spacecraft, Brown said. (IANS)