Pic of the Week: Very Different Neighborhoods

Posted on by onespaceman2000
Image (Credit): Hubble Space Telescope image of a sparkling spiral galaxy paired with a prominent star, both in the constellation Virgo. (ESA/Hubble & NASA, S. J. Smartt, C. Kilpatrick)

This week’s image is from the NASA/ESA Hubble Space Telescope. It shows what appears to be two close neighbors – a star and a galaxy – but looks can be deceiving.

Here is more from NASA about this image:

This NASA/ESA Hubble Space Telescope image features a sparkling spiral galaxy paired with a prominent star, both in the constellation Virgo. While the galaxy and the star appear to be close to one another, even overlapping, they’re actually a great distance apart. The star, marked with four long diffraction spikes, is in our own galaxy. It’s just 7,109 light-years away from Earth. The galaxy, named NGC 4900, lies about 45 million light-years from Earth.

This image combines data from two of Hubble’s instruments: the Advanced Camera for Surveys, installed in 2002 and still in operation today, and the older Wide Field and Planetary Camera 2, which was in use from 1993 to 2009. The data used here were taken more than 20 years apart for two different observing programs — a real testament to Hubble’s long scientific lifetime.

Pic of the Week: The Lynds 483 Hourglass

Posted on by onespaceman2000
Image (Credit): Lynds 483 as captured by the JWST. (NASA, ESA, CSA, STScI)

This week’s image is from the James Webb Space Telescope. It shows two actively forming stars that are 650 light-years away. The formation is called Lynds 483, or L483, after American astronomer Beverly Turner Lynds, who studied nebulae in the early 1960s.

Here is more information about the image from NASA:

The two protostars responsible for this scene are at the center of the hourglass shape, in an opaque horizontal disk of cold gas and dust that fits within a single pixel. Much farther out, above and below the flattened disk where dust is thinner, the bright light from the stars shines through the gas and dust, forming large semi-transparent orange cones.

It’s equally important to notice where the stars’ light is blocked — look for the exceptionally dark, wide V-shapes offset by 90 degrees from the orange cones. These areas may look like there is no material, but it’s actually where the surrounding dust is the densest, and little starlight penetrates it. If you look carefully at these areas, Webb’s sensitive NIRCam (Near-Infrared Camera) has picked up distant stars as muted orange pinpoints behind this dust. Where the view is free of obscuring dust, stars shine brightly in white and blue.

Pic of the Week: Athena Lands on Moon

Posted on by onespaceman2000
Image (Credit): Athena approaching the Moon on March 6, 2025. (NASA)

This week’s image is from earlier today when Intuitive Machines’ Athena lunar lander was approaching the Moon’s South Pole. The good news is that the lander made it safely to the surface. However, the lunar lander may have landed in an odd way, creating solar generating issues similar to the company’s first attempt at landing this time last year.

NASA and Intuitive Machines are still trying to determine the status of the lander as well as its exact location. The lander’s goal was to land in Mons Mouton, a lunar plateau near the Moon’s South Pole. NASA’s Lunar Reconnaissance Orbiter should help to pinpoint the lander’s location and orientation in the next few days.

Hopefully, some if not all of the planned experiments are still possible. But for now it’s just a matter of waiting for more news on the mission.

Pic of the Week: The Far Side of the Moon

Posted on by onespaceman2000
Image (Credit): The far side of the Moon captured by the Blue Ghost spacecraft. (Firefly Aerospace)

The image above is part of a video taken last week showing the far side of the Moon by Firefly Aerospace’s Blue Ghost spacecraft. The spacecraft is about 120 kilometers above the lunar surface. You can see the video here.

Regarding the video, the company noted:

In this orbit, the team will experience planned rolling comms blackouts as Blue Ghost goes around the far side of the Moon. When on the near side, the team will continue to downlink data and finalize the plan for our next maneuver that will get Blue Ghost even closer to the lunar surface and keep us right on track for landing on March 2.

You can learn more about the Blue Ghost’s mission here.

Pic of the Week: Super Star Cluster Westerlund 1

Posted on by onespaceman2000
Image (Credit): Super star cluster Westerlund 1. (ESA/Webb, NASA & CSA, M. Zamani (ESA/Webb), M. G. Guarcello (INAF-OAPA) and the EWOCS team)

This week’s image from the James Webb Space Telescope was released late last year. It shows Westerlund 1, a colorful “super star” cluster.  

Here is the description of what you are seeing from NASA:

Super star clusters are young and contain more than 10,000 times the mass of the Sun packed into a small volume. Westerlund 1 is the most massive yet identified in our galaxy, with 50,000 to 100,000 times the mass of the Sun contained within a region less than six light-years across. Still considered an open cluster now, someday it will evolve into a globular cluster – a roughly spherical, tightly packed collection of old stars bound together by gravity.

Super star clusters are one of the most extreme environments in which stars and planets can form. Because our galaxy is past its peak of star formation, and because stars live relatively short lives, only a few of these clusters still exist to give us clues to that past era.

Westerlund 1 has a large, dense, and diverse population of evolved, massive stars. It contains so many massive stars that in a timespan of less than 40 million years, it’ll be the site of more than 1500 supernovas. This cluster is a natural laboratory for the study of extreme stellar physics, helping us learn how the most massive stars in our galaxy live and die, and how stellar winds, supernovae, and other ejected material affect star formation within their environment.