The Expanse

A huge, billowing pair of gas and dust clouds are captured in this stunning NASA Hubble Space Telescope image of the supermassive star Eta Carinae. Even though Eta Carinae is more than 8,000 light-years away, structures only 10 billion miles across (0.0017 LY, or about the diameter of our solar system) can be distinguished. Dust lanes, tiny condensations, and strange radial streaks all appear with unprecedented clarity.

Messier 87 is a supergiant elliptical galaxy in the constellation Virgo that contains several trillion stars. One of the largest and most massive galaxies in the local universe,it has a large population of globular clusters—about 15,000 compared with the 150–200 orbiting the Milky Way—and a jet of energetic plasma that originates at the core and extends at least 1,500 parsecs (4,900 light-years), traveling at a relativistic speed. It is one of the brightest radio sources in the sky.

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This beautiful galaxy is our second closest (major) galactic neighbor right after the Andromeda Galaxy. It's classified as a barless spiral galaxy and it is rich with new star formation hence the bright red nebulae seen here.

A new image from NASA’s James Webb Space Telescope of a portion of the Helix Nebula highlights comet-like knots, fierce stellar winds, and layers of gas shed off by a dying star interacting with its surrounding environment.

Webb’s image also shows the stark transition between the hottest gas to the coolest gas as the shell expands out from the central white dwarf.

Credit: NASA, ESA, CSA, STScI Image Processing: Alyssa Pagan (STScI)