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The star-forming nebula W51 is one of the largest "star factories" in the Milky Way galaxy. Interstellar dust blocks the visible light emitted by the region, but it is revealed by NASA's Spitzer Space Telescope, which captures infrared light that can penetrate dust clouds.

TXS 0128+554, outlined in red here, is an elliptical galaxy located 500 million light-years away in the constellation Cassiopeia.

Comet NEOWISE Rotation Sequence.

The centre of quasar 3C279 emits flickering gamma radiation, which is characteristic of the phenomenon of magnetic reconnection.

This image of comet C/2020 F3 (NEOWISE) was taken by the Hubble Space Telescope on Aug. 8, 2020. Hubble’s image represents the first time a comet of this brightness has been photographed at such resolution after this close of a pass by the Sun. The two structures appearing on the left and right sides of the comet’s center are jets made up of ice sublimating from beneath the surface of the nucleus, with the resulting dust and gas being squeezed through at a high velocity. The jets emerge as cone-like structures, then are fanned out by the rotation of comet NEOWISE’s nucleus.

Illustration of the LCRD payload transmitting an optical signal to OGS-2 in Haleakala, Hawaii.

Animation inspired by the bright, burning glow of meteors as they enter Earth's atmosphere.

Electron microscopy experiments revealed meandering stripes formed by metal atoms of rhenium and niobium in the lattice structure of a 2D transition metal dichalcogenide alloy.

A new sequence of Chandra images, taken over nearly a decade and a half, captures motion in Kepler's supernova remnant. Pieces of this debris field are still moving at about 23 million miles per hour over 400 years after the explosion was spotted by early astronomers. Scientists are still trying to determine whether an extremely powerful explosion or an unusual environment around it is responsible for these high speeds so long after the explosion. The Kepler supernova was triggered by a white dwarf that reached a critical mass after interacting with a companion star and exploded.

Wildfires Increase in California and NASA's Terra Satellite Captures the Scene