Webb + Hubble > Peanut Butter + Chocolate? We Think So!

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Our supply of eclipse glasses is running very low.

Wed. Apr. 17: Another cloudy night, so we'll be closed. We'll try again next week.

ESA's Gaia Mission has been mapping the Milky Way for over 10 years! Check out its greatest discoveries in this short video (~5 minutes).

2023 October 17

PDS 70: Disk, Planets, and Moons Image Credit: ALMA (ESO/NAOJ/NRAO); M. Benisty et al.

Explanation: It’s not the big ring that’s attracting the most attention. Although the big planet-forming ring around the star PDS 70 is clearly imaged and itself quite interesting. It’s also not the planet on the right, just inside the big disk, that’s being talked about the most. Although the planet PDS 70c is a newly formed and, interestingly, similar in size and mass to Jupiter. It’s the fuzzy patch around the planet PDS 70c that’s causing the commotion. That fuzzy patch is thought to be a dusty disk that is now forming into moons – and that had never been seen before. The featured image was taken in 2021 by the Atacama Large Millimeter Array (ALMA) of 66 radio telescopes in the high Atacama Desert of northern Chile. Based on ALMA data, astronomers infer that the moon-forming exoplanetary disk has a radius similar to our Earth’s orbit, and may one day form three or so Luna-sized moons – not very different from our Jupiter’s four.

∞ Source: apod.nasa.gov/apod/ap231017.html

The Fireworks Galaxy. Imaged at Bridgewater State University Observatory, Fall 2019. Reprocessed 2025. Credit: BSU Experimental Astrophysics Research (BEAR) Team.

2023 October 23

Moon Io from Spacecraft Juno Image Credit: NASA, JPL-Caltech, SwRI, MSSS; Processing & Copyright: Ted Stryk & Fernando García Navarro

Explanation: There goes another one! Volcanoes on Jupiter’s moon Io keep erupting. To investigate, NASA’s robotic Juno spacecraft has begun a series of visits to this very strange moon. Io is about the size of Earth’s moon, but because of gravitational flexing by Jupiter and other moons, Io’s interior gets heated and its surface has become covered with volcanoes. The featured image is from last week’s flyby, passing within 12,000 kilometers above the dangerously active world. The surface of Io is covered with sulfur and frozen sulfur dioxide, making it appear yellow, orange and brown. As hoped, Juno flew by just as a volcano was erupting – with its faint plume visible near the top of the featured image. Studying Io’s volcanoes and plumes helps humanity better understand how Jupiter’s complex system of moons, rings, and auroras interact. Juno is scheduled to make two flybys of Io during the coming months that are almost 10 times closer: one in December and another in February 2024.

∞ Source: apod.nasa.gov/apod/ap231023.html

A reminder that our public Spring events start this week!

Public nights are here!

The Hidden Galaxy, IC 342 // Ondřej Pešák

NASA

NASA’s Webb Snaps Supersonic Outflow of Young Star

This image of HH 211 from NASA’s James Webb Space Telescope reveals an outflow from a Class 0 protostar, an infantile analog of our Sun when

Take-aways:

This is a baby star imaged in stunning detail

Stars are born violently - there's hot gas striking the other gas and dust around it, making these amazing patterns

This particular baby star will one day be like the Sun 💖