2023 October 10

Mare Cognitum ("The Sea that has Become Known") with Kuiper crater at the center // l'AstroVan

Mare Cognitum ("The Sea that has Become Known") is the landing sites of several lunar missions. Ranger 7 (1964) impacted here after its mission was finished; Surveyor 3 (1967) and Apollo 12 (1969) landed near its northern shore; and Apollo 14 (1971) landed near this mare as well.

Kuiper crater is named after the Dutch-American astronomy Gerard Kuiper (1905-1973), the father of modern planetary science

Fall 2023 Public Events

Our next round of public events starts in September - here's the schedule (each event is weather-dependent, so always check back to see if the event is on!):

Public Nights on Wednesdays: - Sept. 27, 7:30 - 9:00 pm - Oct. 4, 11, and 18, 7:00 - 8:30 pm - Nov. 1, 7:00 - 8:30 pm - Nov. 8 and 15, 6:00 - 7:30 pm

Special Daytime Event: Oct. 14 Partial Solar Eclipse! 10:30 am - 2:45 pm

Halloween Events! - Oct. 25, 7:00 - 8:30 pm - Rain Date 1: Oct. 26, 7:00 - 8:30 pm (only occurs if Oct. 25 doesn't) - Rain Date 2: Oct. 30, 7:00 - 8:30 pm (only occurs if both Oct. 25 and 26 do not)

During our events, we set up telescopes and find objects in the sky for our visitors to see. We talk astronomy, too! Our events are free, open to the public, and appropriate for all ages.

3/19/25: So far it looks likely to cloud up, but we'll wait a few more hours before deciding whether to hold our public night.

Dusty regions like these are often the places where stars form. In fact, there are two notable stars—V633 (top left of center) and V376 Cassiopeiae (bottom left)—in this image from the Hubble Space Telescope.

These stars have yet to start fusing hydrogen in their cores, and continue to accumulate mass. As they do this, much of the material they ingest gets shot back out as energetic jets. For these young stars, these jets can contain as much mass as Earth has.

Credit: ESA/Hubble & NASA; Gilles Chapdelaine.

ALT TEXT: A protostar in the process of forming. Above the center, at 11 o’clock, is a bright, white star. To the bottom right of this star is a large cavity, surrounded by dark brown gas and dust. This surrounding dust fills the image with the exception of another small cavity toward the bottom left. At about 4 o’clock in this cavity, there is another bright, white star. Smaller white stars are spread throughout the image.

2023 October 4

IC 2118: The Witch Head Nebula Image Credit & Copyright: Abdullah Alharbi

Explanation: Does this nebula look like the head of a witch? The nebula is known popularly as the Witch Head Nebula because, it is said, the nebula’s shape resembles a Halloween-style caricature of a witch’s head. Exactly how, though, can be a topic of imaginative speculation. What is clear is that IC 2118 is about 50 light-years across and made of gas and dust that points to – because it has been partly eroded by – the nearby star Rigel. One of the brighter stars in the constellation Orion, Rigel lies below the bottom of the featured image. The blue color of the Witch Head Nebula and is caused not only by Rigel’s intense blue starlight but because the dust grains scatter blue light more efficiently than red. The same physical process causes Earth’s daytime sky to appear blue, although the scatterers in planet Earth’s atmosphere are molecules of nitrogen and oxygen.

∞ Source: apod.nasa.gov/apod/ap231004.html

Pumpkin space latte, anyone? ☕

Hubble captured this festive array of stars, Terzan 12, found in the Milky Way about 15,000 light-years from Earth. The stars in this cluster are bound together by gravity in a sphere-like shape and are shrouded in gas and dust. As the starlight travels through that gas and dust to Earth, blue light scatters, leaving the redder wavelengths to come through.

Download the full-resolution image here.

Make sure to follow us on Tumblr for your regular dose of space!

Messier-20 is called the “Trifid Nebula” because of the three bright lobes in the lower purple-coloured area. This purple region is emitting light, while the upper blue area is just reflecting it.

It is a local star-forming region in our Milky Way galaxy (4,000 light years away). (at Bordeaux, France) https://www.instagram.com/p/B1bxBljC5H9/?igshid=1g0i6zddk37k

We'll be open tonight, Wed. 4/23, 8:30 - 9:45 pm! We expect lovely skies.

The Spaghetti Nebula, Sh2-240 // Wolfgang Bernhardt