This week’s image is from the International Space Station (ISS). It shows Northrop Grumman’s Cygnus resupply capsule on August 6, 2024 as the International Space Station’s (ISS) Canadarm2 robotic arm attempts to capture it. NASA noted that this Canadarm2 maneuver marked the 50th free-flying capture for the robotic arm.
This week’s image looks dark and simple, and yet it is an amazing sight provided by NASA’s James Webb Space Telescope (JWST). It shows a directly imaged exoplanets that resides about 12 light-years from us. It is called Epsilon Indi Ab and is several times the mass of Jupiter.
Here is an explanation from NASA about what you are seeing in the image:
This image of the gas-giant exoplanet Epsilon Indi Ab was taken with the on NASA’s James Webb Space Telescope’s MIRI (Mid-Infrared Instrument). A star symbol marks the location of the host star Epsilon Indi A, whose light has been blocked by the coronagraph, resulting in the dark circle marked with a dashed white line. Epsilon Indi Ab is one of the coldest exoplanets ever directly imaged. Light at 10.6 microns was assigned the color blue, while light at 15.5 microns was assigned the color orange. MIRI did not resolve the planet, which is a point source.
NASA’s Chandra X-ray Observatory is celebrating the 25th anniversary of the observatory, which means we get to view quite a few amazing images from over the years, such as the one above called the Bat Shadow.
Here is more from NASA on this image explaining the bat connection:
In this composite image, several pink and white stars gleam through murky cloud formations. These are young stars detected by Chandra. At our lower right, an opaque cloud resembling a veined slug rises out of a muddy brown mist. Blue and grey clouds with hints of brown stretch from our lower left, to our upper right. There, near the upper righthand corner, two long black triangles appear to burst from a central gleaming star. These triangles are in fact shadows from the young star, cast on distant blue and grey clouds. The eerie shape, reminiscent of the Batman call sign projected against a cloudy Gotham sky, has earned the phenomenon the nickname The Bat Shadow.
This week’s fun image comes from the James Webb Space Telescope. Called the Penguin and the Egg, these two galaxies of similar mass are locked together.
Here is the story of the two galaxies from NASA:
Before their first approach, the Penguin held the shape of a spiral. Today, its galactic center gleams like an eye, its unwound arms now shaping a beak, head, backbone, and fanned-out tail.
Like all spiral galaxies, the Penguin is still very rich in gas and dust. The galaxies’ “dance” gravitationally pulled on the Penguin’s thinner areas of gas and dust, causing them to crash in waves and form stars. Look for those areas in two places: what looks like a fish in its “beak” and the “feathers” in its “tail.”
Surrounding these newer stars is smoke-like material that includes carbon-containing molecules, known as polycyclic aromatic hydrocarbons, which Webb is exceptional at detecting. Dust, seen as fainter, deeper orange arcs also swoops from its beak to tail feathers.
In contrast, the Egg’s compact shape remains largely unchanged. As an elliptical galaxy, it is filled with aging stars, and has a lot less gas and dust that can be pulled away to form new stars. If both were spiral galaxies, each would end the first “twist” with new star formation and twirling curls, known as tidal tails.
Another reason for the Egg’s undisturbed appearance: These galaxies have approximately the same mass or heft, which is why the smaller-looking elliptical wasn’t consumed or distorted by the Penguin.
It is estimated that the Penguin and the Egg are about 100,000 light-years apart — quite close in astronomical terms. For context, the Milky Way galaxy and our nearest neighbor, the Andromeda Galaxy, are about 2.5 million light-years apart. They too will interact, but not for about 4 billion years.
The colorful image this week is from the Hubble Space Telescope. It shows the stars that make up Omega Centauri, a globular cluster one can view with the naked eye.
Here’s a little more about this image from the European Space Agency (ESA):
Omega Centauri is visible from Earth with the naked eye and is one of the favourite celestial objects for stargazers in the southern hemisphere. Although the cluster is 17 000 light-years away, lying just above the plane of the Milky Way, it appears almost as large as the full Moon when seen from a dark rural area. The exact classification of Omega Centauri has evolved through time, as our ability to study it has improved. It was first listed in Ptolemy’s catalogue nearly two thousand years ago as a single star. Edmond Halley reported it as a nebula in 1677, and in the 1830s the English astronomer John Herschel was the first to recognise it as a globular cluster. Omega Centauri consists of roughly 10 million stars that are gravitationally bound.
Our Awesome Universe 