NASA has pumped up the James Webb Space Telescope with another stunning test image, just days before the big reveal, to highlight the observatory's first full-color photographs.

The US space agency released a fresh image from one of the massive infrared telescope's instruments, the Fine Guidance Sensor, on Thursday. NASA casually released the image on social media to demonstrate Webb's strength and clarity: an almost incomprehensibly deep perspective of the universe in red monochrome.

The unexpected teaser was released just 6 days before the agency and its partners, the European Space Agency, and the Canadian Space Agency planned to release the first batch of accurate, full-color photographs on July 12. Despite NASA Administrator Bill Nelson's declaration that the cache will feature the deepest image of the universe ever shot, experts noted that this image — a routine engineering test of Webb's Fine Guidance Sensor — already breaks the current record for the farthest infrared glimpse into the cosmos.



 Talk about an overachiever!



For some, the new image (at the top of this story) may not appear to be anything special — at best, sesame seeds on a hamburger bun or gnats smooshed on a car windshield. But they're staring at the abyss: galaxies teeming with solar systems are hidden behind a few brilliant stars with huge spikes of light.

That's right: each of those specks could hold hundreds of billions of stars and planets. According to the telescope team, there are thousands of faint galaxies within this single frame, many of which are in the distant, early cosmos. Looking further translates into observing the past in astronomy because light and other forms of radiation take longer to reach us.


Do you still feel small?


"There's no way that Webb can stare... at any point in the sky and not go extraordinarily deep," said Jane Rigby, a NASA project scientist, during the observatory's early calibration tests.

That is correct in this case. The primary function of Canada's Fine Guidance Sensor is to point and hold onto cosmic targets. Taking images is merely an added benefit. Engineers were testing the telescope's capacity to "roll to one side like an airplane in flight, lock onto one star, and roll" at the time the photo was taken, according to NASA in a blog. Some recent Top Gun: Maverick moviegoers may see this as a flashback.

The image is the product of 72 exposures piled on top of each other over the course of 32 hours. According to the article, the ragged borders of the shot are caused by overlapping frames.

Webb, who launched into space six months ago on Christmas morning, will monitor some of the universe's oldest and darkest light. Astronomers believe Webb's research will reign in a golden age in our understanding of the universe.

The $10 billion infrared telescopes will investigate a time period fewer than 300 million years after the Big Bang when many of the earliest stars and galaxies were formed. It will also be used by scientists to see into the atmospheres of distant worlds. Water and methane discoveries, for example — two essential components of life — could be indicators of potentially life-friendly settings.