Skip to main content

James Webb Space Telescope about to attempt next crucial step

It’s been a low-key week for the James Webb Space Telescope. Having successfully deployed its enormous sunshield earlier this month, followed a short while later by its golden primary mirror, the most advanced space telescope ever built has been quietly zipping through space toward its destination orbit almost a million miles from Earth.

After launching on December 25, the James Webb Space Telescope was 865,000 miles from Earth on Thursday — just 32,000 miles short of its destination orbit around the second sun-Earth Lagrange point, known as L2.

Webb is now gearing up for its next crucial step: A crucial burn to insert it into the L2 orbit, currently set for Monday, January 24.

The team confirmed the timing of the insertion maneuver in a tweet.

“Our orbital burn is now targeted for Monday afternoon to give our team time for the multiple hours of preparation required,” the message said.

Tracking our journey on https://t.co/1OTI2bYnfR? Our orbital burn is now targeted for Monday afternoon to give our team time for the multiple hours of preparation required. Our milestones are human-controlled to provide our team flexibility to pause & adjust. #UnfoldTheUniverse

— NASA Webb Telescope (@NASAWebb) January 20, 2022

Since the successful deployment of the primary mirror a couple of weeks ago, the space telescope and its instruments have been gradually cooling down, a process aided by the tennis court-sized sunshield.

Before Webb can begin its work exploring deep space, the team has to work on aligning the telescope’s optics and calibrating the scientific instruments, a process expected to take about five months.

It means that Webb will start peering into deep space around June, observing the universe’s first galaxies, revealing the birth of stars and planets, and searching for exoplanets with the potential for sustaining life.

The James Webb Space Telescope is following in the footsteps of the Hubble Space Telescope, which has been exploring deep space for more than 30 years. But with Webb far more powerful than Hubble, scientists are hoping to make significant discoveries during the mission that go well beyond Hubble’s achievements.

The $10 billion mission — a partnership between NASA, the European Space Agency, and the Canadian Space Agency — launched on December 25 and will run for at least five years, though likely much longer.

For a full overview of the Webb mission, check out this Digital Trends article.

Editors' Recommendations

Trevor Mogg
Contributing Editor
Not so many moons ago, Trevor moved from one tea-loving island nation that drives on the left (Britain) to another (Japan)…
James Webb captures a unique view of Uranus’s ring system
This image of Uranus from NIRCam (Near-Infrared Camera) on NASA’s James Webb Space Telescope shows the planet and its rings in new clarity. The Webb image exquisitely captures Uranus’s seasonal north polar cap, including the bright, white, inner cap and the dark lane in the bottom of the polar cap. Uranus’ dim inner and outer rings are also visible in this image, including the elusive Zeta ring—the extremely faint and diffuse ring closest to the planet.

A festive new image from the James Webb Space Telescope has been released, showing the stunning rings of Uranus. Although these rings are hard to see in the visible light wavelength -- which is why you probably don't think of Uranus as having rings like Saturn -- these rings shine out brightly in the infrared wavelength that Webb's instruments operate in.

The image was taken using Webb's NIRCam instrument and shows the rings in even more detail than a previous Webb image of Uranus, which was released earlier this year.

Read more
James Webb spots tiniest known brown dwarf in stunning star cluster
The central portion of the star cluster IC 348. Astronomers combed the cluster in search of tiny, free-floating brown dwarfs.

A new image from the James Webb Space Telescope shows a stunning view of a star cluster that contains some of the smallest brown dwarfs ever identified. A brown dwarf, also sometimes known as a failed star, is an object halfway between a star and a planet -- too big to be a planet but not large enough to sustain the nuclear fusion that defines a star.

It may sound surprising, but the definition of when something stops being a planet and starts being a star is, in fact, a little unclear. Brown dwarfs differ from planets in that they form like stars do, collapsing due to gravity, but they don't sustain fusion, and their size can be comparable to large planets. Researchers study brown dwarfs to learn about what makes the difference between these two classes of objects.

Read more
James Webb provides a second view of an exploded star
A new high-definition image from NASA’s James Webb Space Telescope’s NIRCam (Near-Infrared Camera) unveils intricate details of supernova remnant Cassiopeia A (Cas A), and shows the expanding shell of material slamming into the gas shed by the star before it exploded. The most noticeable colors in Webb’s newest image are clumps of bright orange and light pink that make up the inner shell of the supernova remnant. These tiny knots of gas, comprised of sulfur, oxygen, argon, and neon from the star itself, are only detectable by NIRCam’s exquisite resolution, and give researchers a hint at how the dying star shattered like glass when it exploded.

When massive stars run out of fuel and come to the ends of their lives, their final phase can be a massive explosion called a supernova. Although the bright flash of light from these events quickly fades, other effects are longer-lasting. As the shockwaves from these explosions travel out into space and interact with nearby dust and gas, they can sculpt beautiful objects called supernova remnants.

One such supernova remnant, Cassiopeia A, or Cas A, was recently imaged using the James Webb Space Telescope's NIRCam instrument. Located 11,000 light-years away in the constellation of Cassiopeia, it is thought to be a star that exploded 340 years ago (as seen from Earth) and it is now one of the brightest radio objects in the sky. This view shows the shell of material thrown out by the explosion interacting with the gas that the massive star gave off in its last phases of life.

Read more