Posted on 01/25/2022 8:01:56 AM PST by Red Badger
NASA
The James Webb Space Telescope has fired its thrusters and reached its orbital destination around a million miles (1.5 million kilometers) away from our planet, NASA said Monday, a key milestone on its mission to study cosmic history.
At around 2:00 pm Eastern Time (1900 GMT), the observatory fired its thrusters for 5 minutes in order to reach the so-called second Lagrange point, or L2, where it will have access to nearly half the sky at any given moment.
"Webb, welcome home!" said NASA Administrator Bill Nelson in a statement.
"We're one step closer to uncovering the mysteries of the Universe. And I can't wait to see Webb's first new views of the Universe this summer!"
Diagram showing Webb's path between Earth and L2 Trajectory of Webb's final burn. (Steve Sabia/NASA Goddard)
In this region of space, it will stay in line with the Earth as it moves around the Sun, allowing Webb's sunshield to protect its sensitive equipment from heat and light.
For the giant parasol to offer effective protection, it needs the Sun, Earth, and Moon to all be in the same direction, with the cold side operating at - 370 degrees Fahrenheit (-225 Celsius).
The thruster firing, known as an orbital burn, was the third such maneuver since Webb was launched on an Ariane 5 rocket on December 25.
The plan was intentional, because if Webb had gotten too much thrust from the rocket, it wouldn't be able to turn around to fly back to Earth, as that would expose its optics to the Sun, overheating and destroying them.
It was therefore decided to slightly underburn the rocket firing and use the telescope's own thrusters to make up the difference.
Webb, which is expected to cost NASA nearly US$10 billion, is one of the most expensive scientific platforms ever built, comparable to the Large Hadron Collider at CERN, and its predecessor telescope, Hubble.
🏠 Home, home on Lagrange! We successfully completed our burn to start #NASAWebb on its orbit of the 2nd Lagrange point (L2), about a million miles (1.5 million km) from Earth. It will orbit the Sun, in line with Earth, as it orbits L2. https://t.co/bsIU3vccAj #UnfoldTheUniverse pic.twitter.com/WDhuANEP5h
— NASA Webb Telescope (@NASAWebb) January 24, 2022 Halo orbit But while Hubble orbits the Earth, Webb will orbit in an area of space known as a Lagrange point, where the gravitational pull from the Sun and Earth will be balanced by the centrifugal force of the rotating system.
An object at one of these five points, first theorized by Italian French mathematician Joseph-Louis Lagrange, will remain stable and not fall into the gravity well of the Sun and Earth, requiring only a little fuel for adjustments.
Webb won't sit precisely at L2, but rather go around it in a "halo" at a distance similar to the Earth and Moon, completing a cycle every six months.
Another milestone complete! ✅
Today's orbital insertion burn today was a success! #Webb has now arrived to its final orbit around the second Sun-Earth Lagrange point ("L2") around 1.5 million kilometres away (animation 👇). Details: https://t.co/DlriNEVjcM 📷: @NASAGoddard pic.twitter.com/guBF1eubSP
— ESA Webb Telescope (@ESA_Webb) January 24, 2022 This will allow the telescope to remain thermally stable and to generate power from its solar panels.
Previous missions to L2 include the European Space Agency's Herschel and Planck observatories, and NASA's Wilkinson Microwave Anisotropy Probe.
Diagram showing the Lagrange points around Earth. The five gravitational balance points around Earth. (NASA/WMAP Science Team)
Webb's position will also allow continuous communications with Earth via the Deep Space Network – three large antennas in Australia, Spain and California.
Earlier this month, NASA completed the process of unfolding Webb's massive golden mirror that will collect infrared signals from the first stars and galaxies that formed 13.5 billion years ago.
Visible and ultraviolet light emitted by the very first luminous objects has been stretched by the Universe's expansion, and arrives today in the form of infrared, which Webb is equipped to detect with unprecedented clarity.
Its mission also includes the study of distant planets, known as exoplanets, to determine their origin, evolution, and habitability.
Next steps include aligning the telescope's optics, and calibrating its scientific instruments. It is expected to transmit its first images back in June or July.
Outstanding
“We’re one step closer to uncovering the mysteries..
I can show you a way that is already written.
Look in the Bible at the first book Genesis.
Its all there.
“..Look in the Bible at the first book Genesis. Its all there...”
They can go look/see, but “...in their wisdom, they became as fools...”
>>>We’re one step closer to uncovering the mysteries of the Universe<<<
Dang, I read the first verse of the Authorized King James Bible and learned the mystery of the universe, and it didn’t cost me a dime!
“In the beginning, God . . .”
As long as atheists can atheist, they can pretend that they will not one day stand before a Judge. That is all that evolution is about . . . pretending that whats coming ain’t really whats coming. As long as there isn’t a God they don’t have to worry about meeting God . . . for now.
So the Bible tells us about physics? Didn’t think so. Ever think God wants us to discover and not just sit here?
(NASA) - The James Webb Space Telescope has fired its thrusters and reached its orbital destination around a million miles (1.5 million kilometers) away from our planet, NASA said Monday, a key milestone on its mission to develop a “next-generation” version of it’s popular Tang drink powder.
I see from this it appears in orbit around the sun, located 1 million miles further out than earth’s orbit. One could say on the dark side of the earth, shaded by earth all the time ??
4 times as far then the earth’s moon is.
Is this a correct assessment ?
Can’t always be totally in shade of earth as it needs sun to power from. So maybe off by one degree. Earth needs alot of power for data as to overcome noise from the sun mixed in with it.
Correct.
It’s ‘isolated’ from Earth’s noise as well.................
NASA will need multiple earth stations to ‘talk’ to it as none are able to ‘see’ it more than like ten hours a day.
We have them all around the Earth..............
They already have that. It’s called Deep Space Network. My son “drives” an array of satellites and works with Deep Space Network in Australia frequently.
There’s nothing like the universe to bring you down to earth!
* * * Webb reaches L2 Lagrange point * * *
Does it come with high resolution IR digital images?
I hope they checked with the asteroid folks so orbits don’t cross. Poof!
And now, the Trojan software will execute and turn control over to Communist China.
“in order to reach the so-called second Lagrange point, or L2, where it will have access to nearly half the sky at any given moment.”
Uh??
I have access to half of the sky standing here on earth.
The SUN will destroy the Webb’s optics, so it has multiple shields and is far enough away from Earth to not be affected by Earth noise.............
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