Suggested Searches

Clouds of gas and dust with many stars. The clouds form a flat, blue background toward the bottom, and become thicker and smokier toward the top. Stars on one side light the nebula. A thick arc of gas and dust reaches around from the bottom-right corner of the image toward the top-left corner. It begins as a dark and obscuring cloud at bottom right and gradually becomes brightly lit by many stars at the upper left. Other large, foreground stars lie between the nebula and the viewer.

Hubble Captures Infant Stars Transforming a Nebula

Named RCW 7, the nebula is located just over 5300 light-years from Earth in the constellation Puppis. Nebulae are areas of space that are rich in the raw material needed to form new stars. Under the influence of gravity, parts of these molecular clouds collapse until they coalesce into protostars, surrounded by spinning discs of leftover gas and dust. In the case of RCW 7, the protostars forming here are particularly massive, giving off strongly ionising radiation and fierce stellar winds that have transformed it into what is known as a H II region. The ultraviolet radiation from the massive protostars excites the hydrogen, causing it to emit light and giving this nebula its soft pinkish glow. Here Hubble is studying a particular massive protostellar binary named IRAS 07299-1651, still in its glowing cocoon of gas in the curling clouds towards the top of the nebula. To expose this star and its siblings, this image was captured using the Wide Field Camera 3 in near-infrared light. The massive protostars here are brightest in ultraviolet light, but they emit plenty of infrared light which can pass through much of the gas and dust around them and be seen by Hubble.

Image Credit: ESA/Hubble & NASA, J. Tan (Chal

Read More