Photos: Stellar views from the Hubble at 17

Some galaxies emit energy as radio wavelengths instead of visible light wavelengths. The radio galaxy MRC 1138-262, or the Spiderweb Galaxy as it's nicknamed, is a massive galaxy being formed from a collection of smaller ones (expanded view).

Photo by NASA, ESA, G. Miley and R. Overzier (Leiden Observatory), and the ACS Science Team