The Leo Triplet is a group of galaxies located in the constellation of Leo. Each of these galaxies contain within them several hundred billion Suns. These galaxies are so distant that light, which can zip around the Earth 7 times in a single second, takes a whopping 35 million years to travel to Earth. This also means that whenever we look at these galaxies, we are seeing them as they are at a time that was even closer to the time of the dinosaurs that it is to us. 

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The galaxy, NGC 3628 at the bottom of the image, also features a faint tidal tail extending towards the right. The tidal tail is a trail of stars formed due to gravitational tidal forces from the two nearby galaxies stretching and distorting it.