An asteroid has been caught sneaking into a galaxy image by the Hubble Space telescope. Here is all you need to know.
NASA’s Hubble Space Telescope has been capturing and sharing some amazing glimpses of space. Sharing one of Hubble’s images, the European Space Agency (ESA) informed that the image has been photobombed by a host of astronomical objects, especially an asteroid. In the centre of the image, the vague shape of the small galaxy UGC 7983 appears as a hazy cloud of light and an asteroid can be seen as a row of four thin consecutive lines spreading from the left upper corner.
“A host of astronomical objects throng this image from the NASA/ESA Hubble Space Telescope. Background galaxies ranging from stately spirals to fuzzy ellipticals are strewn across the image, and bright foreground stars much closer to home are also present, surrounded by diffraction spikes. In the centre of the image, the vague shape of the small galaxy UGC 7983 appears as a hazy cloud of light. UGC 7983 is around 30 million light-years from Earth in the constellation Virgo, and is a dwarf irregular galaxy — a type thought to be similar to the very earliest galaxies in the Universe,” esahubble.org said in a report.
As per the information, the image also conceals an astronomical interloper. A minor asteroid, only a handful of kilometers across, can be seen streaking across the upper left-hand side of this image. The trail of the asteroid is visible as four streaks of light separated by small gaps. These streaks of light represent the four separate exposures that were combined to create this image, the small gaps between each observation being necessary to change the filters inside Hubble’s Advanced Camera for Surveys.
Capturing an asteroid was a fortunate side effect of a larger effort to observe every known galaxy close to the Milky Way, the report stated. When this project was first proposed, roughly 75 percent of all the Milky Way’s near galactic neighbours had been imaged by Hubble. A group of astronomers proposed using the gaps between longer Hubble observations to capture images of the remaining 25 percent.