The images are from the farthest places in the universe that humanity as peered into: as NASA Administrator Bill Nelson told reporters last month, the Webb telescope was "nothing short of a real scientific feat."
Signaling how big a deal Webb's first images are, US President Joe Biden will release one of its first images in an event at the White House today (Monday) at 5 pm EDT. And NASA has detailed the list of cosmic objects that Webb targeted for these first observations.
These listed targets represent the first wave of full-color scientific images and spectra the observatory has gathered, and the official beginning of Webb's general science operations, NASA said.
Here's NASA's description of what the first images are of:
Carina Nebula. The Carina Nebula is one of the largest and brightest nebulae in the sky, located approximately 7,600 light-years away in the southern constellation Carina. Nebulae are stellar nurseries where stars form. The Carina Nebula is home to many massive stars, several times larger than the Sun.
WASP-96 b (spectrum). WASP-96 b is a giant planet outside our solar system, composed mainly of gas. The planet, located nearly 1,150 light-years from Earth, orbits its star every 3.4 days. It has about half the mass of Jupiter, and its discovery was announced in 2014.
Southern Ring Nebula. The Southern Ring, or "Eight-Burst" nebula, is a planetary nebula – an expanding cloud of gas, surrounding a dying star. It is nearly half a light-year in diameter and is located approximately 2,000 light years away from Earth.
Stephan's Quintet: About 290 million light-years away, Stephan's Quintet is located in the constellation Pegasus. It is notable for being the first compact galaxy group ever discovered in 1877. Four of the five galaxies within the quintet are locked in a cosmic dance of repeated close encounters.
SMACS 0723: Massive foreground galaxy clusters magnify and distort the light of objects behind them, permitting a deep field view into both the extremely distant and intrinsically faint galaxy populations.
Webb was launched on an Ariane 5 rocket from Europe's Spaceport in Kourou, French Guiana on December 25, 2021. With a 6.5 meter primary mirror, it will serve as the main observatory for astronomers worldwide for the next decade. The mega telescope underwent a six-month period of preparation to align its complex mirror setup before it began science work.
The telescope has four cameras and spectrometers that can record extremely faint signals. The NIRSpec instrument has programmable microshutters, which enable observation up to 100 objects simultaneously. Webb features a cryocooler for cooling the mid-infrared detectors of the MIRI instrument to 7 Kelvin (.266 degrees Celsius/-447 degrees Fahrenheit).
The first images from Webb mark its official commencement of science operations. The astronomy team have already applied through a competitive process for time to use the telescope.
Webb's first year of science exploration is known as Cycle 1. Astronomers who are part of it join the Cycle 1 General Observers (GO) program, which offers 6,000 hours to observing programs. The programs cover exoplanets and disks, galaxies, solar system astronomy, supermassive black holes and more.