Pic of the Week: Close-up of the Horsehead Nebula

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Image (Credit): The Horsehead Nebula captured by the JWST. (NASA, ESA, CSA, Karl Misselt (University of Arizona), Alain Abergel (IAS, CNRS))

This week’s image comes from the James Webb Space Telescope (JWST). It shows a close-up of the well known Horsehead Nebula, which is about 1,375 light years from Earth. The clarity of the many galaxies in the distance makes this an even more amazing image.

Here is more about the image from the Webb Space Telescope site:

This image of the Horsehead Nebula from NASA’s James Webb Space Telescope focuses on a portion of the horse’s “mane” that is about 0.8 light-years in width. It was taken with Webb’s NIRCam (Near-infrared Camera). The ethereal clouds that appear blue at the bottom of the image are filled with a variety of materials including hydrogen, methane, and water ice. Red-colored wisps extending above the main nebula represent both atomic and molecular hydrogen. In this area, known as a photodissociation region, ultraviolet light from nearby young, massive stars creates a mostly neutral, warm area of gas and dust between the fully ionized gas above and the nebula below. As with many Webb images, distant galaxies are sprinkled in the background.

Pic of the Week: Pa 30 – The Temporary Star

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Image (Credit): Composite image of circular nebula Pa 30. (X-ray: (Chandra) NASA/CXC/U. Manitoba/C. Treyturik, (XMM-Newton) ESA/C. Treyturik; Optical: (Pan-STARRS) NOIRLab/MDM/Dartmouth/R. Fesen; Infrared: (WISE) NASA/JPL/Caltech/; Image Processing: Univ. of Manitoba/Gilles Ferrand and Jayanne English)

This week’s image is a circular nebula that first appears more than 800 years ago, shocking those observing it on Earth at the time and lasting for about 185 days. The circular nebula, called Pa 30, is shown above as a composite of multiple telescopes, including the Chandar X-ray Observatory, which is now facing a threat to its funding.

Hear is more from NASA concerning this image:

X-ray observations by ESA’s XMM-Newton (blue) show the full extent of the nebula and NASA’s Chandra X-ray Observatory (cyan) pinpoints its central source. The nebula is barely visible in optical light but shines bright in infrared light, collected by NASA’s Wide-field Infrared Space Explorer (red and pink). Interestingly, the radial structure in the image consists of heated sulfur that glows in visible light, observed with the ground-based Hiltner 2.4 m telescope at the MDM Observatory (green) in Arizona, USA, as do the stars in the background by Pan-STARRS (white) in Hawaii, USA.

Studies of the composition of the different parts of the remnant have led scientists to believe that it was formed in a thermonuclear explosion, and more precisely a special kind of supernova called a sub-luminous Type Iax event. During this event two white dwarf stars merged, and typically no remnant is expected for this kind of explosion. But incomplete explosions can leave a kind of ‘zombie’ star, such as the massive white dwarf star in this system. This very hot star, one of the hottest stars in the Milky Way (about 200 000 degrees Celsius), has a fast stellar wind with speeds up to 16,000 km/h. The combination of the star and the nebula makes it a unique opportunity for studying such rare explosions.

Pic of the Week: The Total Solar Eclipse

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Image (Credit): Chicagoans watch the April 8, 2024 eclipse. (Brian Cassella/Chicago Tribune)

The image of the week relates to the Total Solar Eclipse that captured the nation’s attention. Goofy glasses like the ones shown in The Chicago Tribune (above) and Wired magazine (below) were worn across the country to watch this rare event.

Image (Credit): Eclipse watchers in Washington, DC. (Chip Somodevilla/Getty Images)

Pic of the Week: The Gediz Vallis Channel

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Image (Credit): Panoramic shot of Mar’s Gediz Vallis channel taken by the Curiosity rover. (NASA/JPL-Caltech)

This week’s image comes from NASA’s Curiosity rover in the Gediz Vallis channel. It is a 360-degree panorama shot from back on February 3. The rover has diligently continued its exploration of the Martian surface since it first landed in 2012.

In terms of this latest rover location, NASA stated:

NASA’s Curiosity rover has begun exploring a new region of Mars, one that could reveal more about when liquid water disappeared once and for all from the Red Planet’s surface. Billions of years ago, Mars was much wetter and probably warmer than it is today. Curiosity is getting a new look into that more Earth-like past as it drives along and eventually crosses the Gediz Vallis channel, a winding, snake-like feature that – from space, at least – appears to have been carved by an ancient river.

That possibility has scientists intrigued. The rover team is searching for evidence that would confirm how the channel was carved into the underlying bedrock. The formation’s sides are steep enough that the team doesn’t think the channel was made by wind. However, debris flows (rapid, wet landslides) or a river carrying rocks and sediment could have had enough energy to chisel into the bedrock. After the channel formed, it was filled with boulders and other debris. Scientists are also eager to learn whether this material was transported by debris flows or dry avalanches.

Pic of the Week: Preparing for the Total Solar Eclipse

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Credit: New York Department of Economic Development

This week’s image comes from the great state of New York, which is advertising the upcoming Total Solar Eclipse on April 8.

New York is one of the state’s that will experience the eclipse, and the New York Department of Economic Development is not missing the chance to ensure everyone knows this.

A handy map also provides the timing of the eclipse in each city.

Credit: New York Department of Economic Development