The James Webb telescope gained 10 years of life thanks to its successful launch –

According to NASA, the James Webb Space Telescope is expected to remain in orbit for more than ten years, thanks to a fuel-efficient launch on Christmas Day.

The telescope was transported aboard the Ariane 5 from Arianespace. Despite two brief medium-term fixes, its launch used less fuel than initially expected. This will allow the $ 10 billion observatory to carry out in-orbit science operations over a lifespan of more than 10 years, the US space agency said in a statement Wednesday.

The first midpoint correction consisted of a relatively smaller shot 65 minutes after launch, increasing the speed of the telescope by approximately 72 km / h. Another smaller correction, made on December 27, increased the speed of the telescope by 10 km / h.

This additional boost also allowed the JWST solar panel to deploy about a minute and a half after separating from Ariane 5, just 29 minutes after launch. The solar panel was coded to deploy automatically when the observatory reaches a certain altitude or 33 minutes after launch, whichever comes first.

The additional fuel will be used for what NASA calls “station maintenance” maneuvers, which are small thrusts intended to adjust Webb’s orbit once it has reached its destination. On the other side of the Earth, in an area known as the second Lagrange point, or L2. It’s a million-kilometer journey that should take about six months.

Once it arrives, it will begin sending unfiltered images back to Earth of the most distant and oldest parts of the galaxy, some 13.7 billion light-years away, or 13.7 billion years ago, just 100 million years ago. after the Big Bang. This is a leap forward from the Hubble telescope, which launched in 1990 at the same time as the space shuttle Discovery.

Comparison of visible and infrared Hubble views of the Monkey Head Nebula. Although Hubble has some infrared capabilities, they are weak compared to the Webb telescope.

The Webb Telescope overcame a long list of unexpected setbacks and delays before its launch on December 25, but NASA said there are many other factors that could affect its final operational life. article adapted by / Images: NASA and ESA

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