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Cassiopeia A, a circular-shaped cloud of gas and dust with complex structure. The inner shell is made of bright pink and orange filaments studded with clumps and knots that look like tiny pieces of shattered glass. Around the exterior of the inner shell, particularly at the upper right, there are curtains of wispy gas that look like campfire smoke. The white smoke-like material also appears to fill the cavity of the inner shell, featuring structures shaped like large bubbles. Around and within the nebula, there are various stars seen as points of blue and white light. Outside the nebula, there are also clumps of yellow dust, with a particularly large clump at the bottom right corner that appears to have very detailed striations.
AAS News

On Day 1 of AAS 243, we heard about ORCs (not of the Tolkien variety), aromatic molecules, and the rarity of life in the universe.

photo of Astrobiters staffing the booth at the grad school fair at AAS 243
AAS News

This week we’ll be bringing you updates from the 243rd AAS meeting happening in New Orleans, LA.

Banner advertising the 243rd meeting of the American Astronomical Society in New Orleans, LA
AAS News

The AAS publishing team is excited to engage with the community at the upcoming AAS meeting. Check out what they’ll be up to at the meeting!

Illustration of Earth-like planets transiting an M-dwarf star
Features

On some exoplanets, a narrow region where it’s permanently dawn or dusk may be the only place that’s habitable. The amount of water on these planets plays a surprising role in whether it stays that way.

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