Tuesday , June 15 2021

Last on Ultima Thule & High Tailed Galaxy



This week, in astronomical news, see two stunning images – one of the edge of the solar system, the latest image of Ultima Thule and the other from the depths of comic galaxies.

The newest image of "New Horizons" by "Ultima Thule"

New horizons of NASA have returned the clearest picture of the Medical University in 201469called "Ultima Thule," the Kuiper Belt object, which has been accelerated since January 1.

Ultima Thule

Ultima Thule's photo from New Horizons
NASA / JHUAPL / SWRI

The spacecraft broke this image using the wide-angle Multicolor Viewable Camera (MVIC) of its Ralph instrument when it was only 4,200 miles (6,700 kilometers) from the ice rock seven minutes before the nearest approach. While the photo was taken on New Year's Eve, it is linked down January 18-19. At present, radio signals take 6 hours and 9 minutes to travel from New Horizons to Earth, and flight data will continue to run in the middle of 2020.

The latest image has an original resolution of 440 feet (135 meters) per pixel, although the image shown above has been deconvolvedor tapered to improve their finer details. The surface of the object's plating is particularly obvious near terminator, the day-night boundary at the top of the image. It is still unclear whether these pits – including the larger, 7-kilometer depression of the small piece called "Thule" – are shock craters or "collapsing". The latter may have formed when the body has long evaporated volatile materials. The image also shows intriguing light and dark markings, especially around a "door" connecting the two bodies.

Read more in the release of New Horizons.

The show of the Hubble "Viewed" galaxy

The vast bunch of coma, a swarm of thousands of galaxies in the constellation of Coma Berenice, contains more than what is visible to the eyes: The hot gas sucks the cluster and shapes the evolution of the galaxies in it.

In this image of the spiral galaxy D100, remarkable evidence of this process can be seen. As the galaxy dives through the Coma cluster, it loses its reservoir of 200,000 light-years of stars, depicted by Subaru's hydrogen alpha filter in Maunakea, Hawaii. A recent image of the Hubble Space Telescope has captured the stars that form in this queue, visible as bright blue spots near the galaxy itself.

Long-haired galaxy

The spiral galaxy D100 sinks into the center of the galaxy-clustered cluster of the coma, moving with a surprisingly narrow pulse of hydrogen gas. This combination combines a Subaru image from 2007 through a hydrogen filter (red) with a visible Hubble luminous image that reveals a blue light of newly formed stars.
Hubble Picture: NASA / ESA / M. Sun (University of Alabama) / W. Kramer and J. Kenny (Yale); Image of Subaru: M. Yagi (NAOJ)

The gas of the galaxy is therefore released pressure, which is the same pressure you feel against your face while riding a bicycle. The faster you pump your feet, the faster your cheeks are, even if it's not a windy day. The D100 senses the same pressure, though instead of moving quietly through the air, it sinks into hot gas. In the end, this leaves the galaxy deprived of star-forming material, although the stars can – and obviously – form in the tail.

Surprisingly, although the striker has a length of two Milky Ways placed side by side, it is only 7000 light-years away. "The tail is remarkably well defined, straight and smooth and has clear edges," says Yale University. "This is a surprise because such a queue is not visible in most computer simulations." Most galaxies undergoing this process are rather a mess.

Part of the reason why the tail is so narrow is that the galaxy has already lost gas from its suburbs and is now in the process of losing gas from its center. The team also suggests that magnetic fields penetrating through the naked gas play a role in shaping the tail by inhibiting turbulence. Data on the presence of magnetism can be seen in the thread of the queue – instead of a clustered structure.

Under and on the left of the spiral of the tail is D99, a "red-dead" elliptical galaxy whose color comes from the older, red stars. It's a look at the destiny of the D100 for hundreds of millions of years after all the star-forming gas has disappeared.

Read more in the Hubble Space Telescope Press Release.


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