Welcome to this week’s installment of The Intelligence Brief… following Tuesday’s historic release by NASA of the first images captured by its groundbreaking James Webb Space Telescope, this week in our analysis we’ll be 1) recapping NASA’s big reveal party, 2) looking at what Webb’s Deep Field imagery is able to tell us about remote corners of the universe, and 3) why the work Webb will achieve in the years ahead is so significant.
Quote of the Week
“The cosmos is within us. We are made of star stuff. We are a way for the universe to know itself.”
While that remains to be seen, right now you can head on over and see the latest videos from The Debrief on our official YouTube channel, where you’ll find recent episodes of Rebelliously Curious with our own Chrissy Newton, and much more. And as always, you’ll find a complete roundup of all our latest articles at the conclusion of this newsletter.
And with all that behind us, we now look ahead at the future of the James Webb Space Telescope and its promising capabilities… but first, a quick look at what was happening Tuesday in Greenbelt, Maryland, during NASA’s big reveal party.
Webb’s First Images: NASA Hosts a Historic Reveal
Earlier this week, the world was treated to the first highly anticipated images produced by NASA’s James Webb Space Telescope, a project decades in the making that has now offered us a glimpse at distant features of our universe in unprecedented detail.
The series of images were unveiled Tuesday morning in a live online event broadcast by the American space agency from NASA’s Goddard Space Flight Center in Greenbelt, Maryland, featuring a who’s who of current NASA scientists, project leaders, and other personnel and partners from around the world.
The event followed a surprise unveiling of one of the images by President Joe Biden at the White House Monday afternoon, and the images were also made available for download on NASA’s website.
“NASA’s James Webb Space Telescope has delivered the deepest and sharpest infrared image of the distant universe so far,” a NASA statement read, describing the first in the incredible new set of new images—a Deep Field galaxy cluster called SMACS 0723—as “teeming with thousands of galaxies – including the faintest objects ever observed in the infrared.”
Apart from the raw beauty of the cosmos the new images give us, they are also providing scientists a wealth of new information that is already reshaping the way we think about our universe.
Webb’s Deep Field Imagery Reveals Finer Details of Our Universe Than Ever Before
Approximately the size of a grain of sand held at arm’s length, Webb’s inaugural Deep Field image revealed at the White House on Monday is already now among the clearest images humans have ever obtained of distant galaxies.
However, one of the unique features of the first image produced by Webb has to do with the underlying physics of the objects in the image, and what they reveal to astronomers for the first time. The combined mass represented by the galaxy cluster in the image serves as a gravitational lens, that actually magnifies even more distant galaxies.
A unique property of space has to do with how matter between a far distant light source and an observer is capable of bending light from that source as it makes its way to our eyes. Known as gravitational lensing, this unique phenomenon was one of the many products of Albert Einstein’s revolutionary theory of general relativity.
“The combined mass of this galaxy cluster acts as a gravitational lens, magnifying more distant galaxies, including some seen when the universe was less than a billion years old,” read a NASA statement accompanying the release of Webb’s first image.
Like many of the most striking images in modern astronomy, the first Webb image, captured by the telescope’s Near-Infrared Camera (NIRCam), is actually a composite of several different images all taken at different spectral wavelengths. The constituent imagery was collected over more than 12 hours, absorbing wavelengths of light well beyond even the deepest fields capable of Webb’s predecessor, the Hubble Space Telescope.
Significantly, images like these are not just showing our universe in unprecedented detail, but the incredible field imagery Webb’s Mid-Infrared Instrument (MIRI) is gathering also depicts how it looked 4.6 billion years ago. Looking at the new Webb images is quite literally like looking back into time at an earlier phase of the galactic formation in our universe.
“We’re seeing [galaxies] as they looked back in time,” said Jane Rigby, Webb Operations Scientist, during Tuesday’s online event. Rigby said the first image captured by Webb is “teeming with galaxies,” adding that it provides “a sharpness and clarity we never had.”
However, the clarity and unique perspectives on galactic formation aren’t all the new Webb images provide for us, as responses to the newly released images have conveyed over the last several days.
the James Webb Space Telescope: Helping Redefine Tomorrow’s Reality
The responses to Webb’s first images were many, as expected, and all seemed to express the collective excitement over what NASA’s most advanced observatory yet will be able to achieve in the coming years.
“Today, simply, is for the dazzle,” wroteTime columnist Jeffery Kluger of the Webb images release on Tuesday. “The universe can stun with its scope and its beauty. Webb, more than any observatory before it, is pulling the curtain on all of that back.”
“The first images from Webb represent only a sliver of the science it will make possible,” wrote Alexandra Witze in Nature, who emphasized the promise of forthcoming studies Webb will help facilitate, which includes everything from the study of faint distant stars and rocky exoplanets that may surround them, to nearby neighbors in our own planetary community like Jupiter and Neptune.
“It’s clear that Webb represents the best of NASA,” said NASA Administrator Bill Nelson during Tuesday’s online event.
“It maintains our ability to propel us forward, for science, for risk taking, for inspiration. And we don’t wanna ever stop exploring the heavens, nor stop daring to take another step forward for humanity.”
“Somewhere something incredible is waiting to be known,” Nelson said, quoting the famous words of the late astronomer Carl Sagan.
One has to stop and imagine what else Carl Sagan might have said about the incredible images of what the late astronomer once called “star stuff”, captured by Webb in new and unprecedented detail. Although in truth, there is perhaps already no better Sagan sentiment than the one quoted by Nelson on Tuesday, to which he tacked on a poignant observation of his own.
“I think those words are becoming reality,” Nelson said. Indeed, the new vision of reality that Webb’s awesome imagery will afford us in the years to come is guaranteed to take our understanding of the universe to new places, and almost certainly will help us uncover the kinds of incredible discoveries that Sagan, and many other great minds throughout the history of science, all once dreamed of.
Decades after a Quantum-Gravity theory will be discovered, there might be job advertisements for engineers who use it to build vehicles that would carry humans to the stars faster than imagined before.