Huge spiral galaxy will help astronomers solve one of the biggest mysteries in astronomy
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The Hubble Space Telescope has studied a spiral galaxy to help astronomers improve their measurement of vast cosmic distances.
The Hubble Telescope took an image of a huge spiral galaxy that has an oval shape called NGC 7038. To do this, it took him 15 hours of observation to see 4 blue spiral arms and a pale yellow center of the galaxy. The purpose of the new Hubble telescope observation was to test two of the most common methods for measuring distance in space: using supernovae of the la type and variable pulsating stars called Cepheids, writes Space.
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The galaxy NGC 7038 is located in the constellation Indus at a distance of 220 million light-years from us. A new image from the Hubble Space Telescope shows this galaxy in great detail, including a huge number of distant stars and galaxies near it.
This galaxy and its surroundings is a very important research target for astronomers, especially when it comes to testing methods for measuring distances to distant space objects.
According to scientists from the Hubble team, supernovae are now used to calculate distances in space. la and Cepheids. Light from supernovae decreases as it travels through space, while Cepheids are stars that get brighter and dim at a constant rate, which also makes them useful for distance determination.
Distance measurement accuracy on the largest cosmic scales depends on how accurately distances to closer objects can be determined. Therefore, in this regard, the galaxy NGC 7038 turned out to be especially useful for astronomers.
According to the European Space Agency, over 30 years of operation, the Hubble telescope and its increasingly accurate distance measurements have made an important contribution into solving one of the most intriguing mysteries in astronomy.
Distance measurements in space are used by scientists to derive a value called the Hubble constant, which measures how fast the universe is expanding.
As the measurements of the Hubble constant became more accurate, their value became more and more out of step with the value Hubble constant, which were derived from observations of the CMB left over from the Big Bang.
This puzzling discrepancy between the two values of the Hubble constant suggests that a new discovery is just waiting in the wings. And if Hubble does not help, then the Webb Space Telescope will definitely solve this problem, the European Space Agency said in a statement.
As Focus already wrote, astronomers assume that they were able to calculate the exact rate of expansion of the Universe and it is greater than expected.
Focus has already written about a real mystery that astronomers have yet to solve and it is associated with the appearance of an impossible object during the merger of neutron stars.