This image from the NASA/ESA Hubble Space Telescope features the galaxy LEDA 48062 in the constellation Perseus. LEDA 48062 is the faint, sparse, amorphous galaxy on the right side of this image, and it is accompanied by a more sharply defined neighbor on the left, the large, disc-like lenticular ga
Hubble Space Telescope image of galaxy LEDA 48062 in the constellation Perseus. Credit: ESA/Hubble & NASA, R. Tullyon the right side of this image, and it is accompanied by a more sharply defined neighbor on the left, the large, disc-like lenticular galaxy UGC 8603. A smattering of more distant galaxies also litter the background, and a handful of foreground stars are also visible throughout the image.
Have you ever wondered why the stars in Hubble images are surrounded by four sharp points? These are called diffraction spikes, and are created when starlight diffracts — or spreads around — the support structures inside reflecting telescopes like Hubble. The four spikes are due to the four thin vanes supporting Hubble’s secondary mirror and are only noticeable for bright objects like stars where a lot of light is concentrated on one spot.
Hubble recently spent some time with our galactic neighbors. LEDA 48062 is only around 30 million light-years from the, and was therefore included in the observing campaign Every Known Nearby Galaxy. The aim of this campaign was to observe precisely that: every known galaxy within 10 megaparsecs of the Milky Way. By getting to know our galactic neighbors, astronomers can determine what types of stars reside in various galaxies and also map out the local structure of the Universe.
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