Where it is: Between 11,000 light-years and 19 million light-years from Earth
NASA has marked the 250th birthday of the U.S. with a striking new collection of cosmic images from its Chandra X-ray Observatory, presenting four deep-space objects in red, white and blue.
Arguably the image most reminiscent of Fourth of July fireworks is that of Cassiopeia A, a famous supernova remnant about 11,000 light-years away in the constellation Cassiopeia (top left). Chandra’s X-ray data, shown in blue and purple, reveal the blast wave from a massive stellar explosion and trace elements such as iron, calcium and oxygen. Meanwhile, infrared data from JWST has been overlaid in red and white, highlighting the expanding shell of debris and cosmic dust. It’s all the result of a massive star that exploded about 340 years ago, according to NASA.
NGC 4736, also known as M94, is something else entirely. Pictured bottom-right, it’s a spiral galaxy about 19 million light-years from Earth in the constellation Canes Venatici. Its famed for the faint arms outside of its oval-shaped core region — known as a "starburst ring," where new stars are forming. It’s shown here with Chandra’s X-ray data layered with visible-light imagery captured by ground-based astrophotographers.
The release of the new photos also includes novel sonifications for NGC 3603, NGC 4736 and ZwCl 0024+1652, transforming astronomical data into sound. The project allows audiences to experience space through both sight and hearing.
See more space photos of the week:
The Artemis II crew recalls the unreal moment when Earth disappeared
First-light images from the Vera C. Rubin Observatory reveal a 163,000-light-year stream of stars emanating from a nearby galaxy.
A spectacular James Webb telescope image reveals intricate structures inside the Helix Nebula.
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