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NASA News: Hubble Showcase Observes Extremely Rare "Special Galaxy" | Science News



The NASA Hubble Space Telescope spotted a "special galaxy" spaced 130 million light-years beyond the Milky Way. The image was taken from a galaxy called NGC 772, located in the Aries constellation. One noticeable difference between the galaxy and our own is that it has no bar, unlike the Milky Way, which is a barred galaxy.

Bars are bands of bright light caused by dust and gas structures that flow through the center of galaxies.

In a barred galaxy, bars contribute to the formation of stars through a funnel of dust and gas in the nucleus of the galaxy.

In galaxies such as NGC 772, this effect is absent, although there is still much dust and gas around to form stars in other parts of the galaxy.

NGC 772 is also an unusual stretched shape, which means that it is technically classified as a "special galaxy."

The peculiarity of its shape in this case is its arm at the top of the image, which has warped as twisted and expanded.

The shape is caused by the movements of a nearby satellite galaxy, which is gravitationally linked to a larger galaxy and orbits around it.

Our galaxy also has sat lolithic galaxies including the Big Magellanic Cloud and the Small Magellanic Cloud, but observations made by the Hubble Telescope suggest that these galaxies may be moving too fast to be truly in orbit around our galaxy.

However, it is believed that these orbital galaxies may, since the end of our own as a large collision, may increase the size of the black hole in the center of our galaxy, destroying everything nearby.

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According to NASA, the shadows are the solar eclipses of the largest moons of Jupiter Io, Ganymede, and Callisto.

Ganymede's shadow sits at the far left edge, followed by Yo's shadow to the right.

You can also see the shadow of Io in the far right edge of the gas giant.

If you watched the Jup iter event, you will see three moons pass directly in front of the Sun.

Jupiter, unlike Earth with only one moon, has a huge 79 known moons.

But even with so many satellites, NASA said the occurrence of three eclipses is an extremely rare occurrence.

The US Space Agency said, "Why is this triple eclipse so unique? Io, Ganymede and Callisto orbit Jupiter at different speeds.

'Their shadows also cross Jupiter's face at different speeds. For example, the outermost moon Callisto orbits the slowest of the three moons.

"Callisto's shadow moves across the globe once every 20 blocks to Io's shadow.

"Add the speed of intersection of Ganymede's shadow, and the triple eclipse becomes even rarer. ”


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