science & techESA/Hubble

Hubble's sharpest view of lenticular galaxy NGC 4753 shows dust lanes from an ancient merger

the gist

Hubble has captured a nearly edge-on view of NGC 4753, a lenticular galaxy about 60 million light-years away in the constellation Virgo. Lenticular galaxies have an elliptical shape with ill-defined spiral arms, sitting between ellipticals and spirals in classification. The dark dust lanes around its core are thought to have come from a merger with a nearby dwarf galaxy roughly 1.3 billion years ago. Most of the galaxy's mass is believed to lie in a halo of dark matter, which does not emit or reflect light and makes up about 85 percent of all matter. William Herschel first discovered the galaxy in 1784, and the new image is the sharpest view yet of its structure.

so what

The image shows how galactic mergers leave visible scars, and it helps astronomers test theories of how lenticular galaxies form.

fun fact

William Herschel discovered Uranus in 1781, a few years before he catalogued this galaxy.

ESA/Hubble · CC BY 4.0

Image: ESA/Hubble & NASA, L. Kelsey