Uranus And Some Of Its Moons On October 20, 2023 // Louis Fico

Wed. 11/6: We'll be closed tonight - we expect lots of clouds rolling in after sunset. We'll try again next week!

This striking image captures the interacting galaxy pair known as Arp-Madore 2339-661, so named because they belong to the Arp-Madore catalogue of peculiar galaxies. However, this particular peculiarity might be even odder than first meets the eye, as there are in fact three galaxies interacting here, not just two. 

The two clearly defined galaxies are NGC 7733 (smaller, lower right) and NGC 7734 (larger, upper left). The third galaxy is currently referred to as NGC 7733N, and can actually be spotted in this picture if you look carefully at the upper arm of NGC 7733, where there is a visually notable knot-like structure, glowing with a different colour to the arm and obscured by dark dust. 

Credit: ESA/Hubble & NASA

The 2023 Partial (Annular) Solar Eclipse as seen from Nevada // Brian Fulda

2023 October 15

An Eclipse Tree Image Credit & Copyright: Shawn Wyre

Explanation: Yes, but can your tree do this? If you look closely at the ground in the featured image, you will see many images of yesterday’s solar eclipse – created by a tree. Gaps between tree leaves act like pinhole lenses and each create a small image of the partially eclipsed Sun visible in the other direction. The image was taken in Burleson, Texas, USA. Yesterday, people across the Americas were treated to a partial eclipse of the Sun, when the Moon moves in front of part of the Sun. People in a narrow band of Earth were treated to an annular eclipse, also called a ring-of-fire eclipse, when the Moon becomes completely engulfed by the Sun and sunlight streams around all of the Moon’s edges. In answer to the lede question, your tree not only can do this, but will do it every time that a visible solar eclipse passes overhead. Next April 8, a deeper, total solar eclipse will move across North America.

∞ Source: apod.nasa.gov/apod/ap231015.html

Reblog Vs. Repost

In short: reblogging is awesome. Reposting isn't.

Wonderous strange! This unusual arrangement in the sky was one of only 100 known polar-ring galaxies when it was captured by the Hubble Space Telescope in 1999. Officially known to astronomers as NGC 4650A, the polar-rings may be the result of two galaxies colliding. Gas from the smaller galaxy would have been stripped off and captured by the larger galaxy, forming a new ring of dust, gas, and stars, which orbit the inner galaxy almost at right angles to the old disk. In addition to learning about galaxy interaction, astronomers use polar-ring galaxies like this to study dark matter, which does not emit light or interact with normal matter (except through gravity), making it difficult to understand. Both the old, rotating disk and the dark matter surrounding this galaxy pull on its polar ring. The alignment of the ring along the pole of the inner disk's rotation allows scientists to probe this combination of tugs and thus the distribution of dark matter. Credit: NASA, ESA, STScI. ALT TEXT: Two galaxies appear to intersect at right angles. Vertically there is a bright column of dust and stars, and horizontally there is a smaller hazy yellow band, brighter at its center, with no discernable stars. In the space around and behind the intersecting forms are smaller stars and distant galaxies colored yellow and red.

Picture of the Day!

The Pencil Nebula, 800 light-years away and nearly 5 light-years long, is a small part of the Vela supernova remnant. This supernova shock wave travels through space at over 500,000 kilometers per hour!

Image credit: Helge Buesing

Wed. Aug. 14 - The weather looks good! We'll be open tonight 8:30-9:30 pm.

Is it me or does Jupiter in this also look like calcifer from howls moving castle

The Black Eye Galaxy. Image Credit: Shane Johnson | Jamie Kern | BSU Observatory.

Imaged in luminance and photometric R, V and B filters. Total exposure time ~25 minutes.

The Black Eye Galaxy (M64) is a relatively nearby spiral with an extraordinary amount of dark dust partially obscuring its nucleus. Red hues peeking out in these dust lanes are caused by reddening when the dust scatters the bluer light from stars embedded within it. The color difference between the center and spiral arms is due to an average age difference between the stars in these locations--blue stars have short lives, so as the star population ages the overall color appears more red.