Sgr-A, the supermassive black hole at the centre of our galaxy ejects powerful jets of charged particles. This image is a composite of Chandra images in X-ray (shown in purple) with Radio images from the VLA (blue). Image credit: X-ray: NASA/CXC/UCLA/Z. Li et al; Radio: NRAO/VLA

Sgr-A, the supermassive black hole at the centre of our galaxy ejects powerful jets of charged particles. This image is a composite of Chandra images in X-ray (shown in purple) with Radio images from the VLA (blue). Image credit: X-ray: NASA/CXC/UCLA/Z. Li et al; Radio: NRAO/VLA

Sgr-A, the supermassive black hole at the centre of our galaxy ejects powerful jets of charged particles. This image is a composite of Chandra images in X-ray (shown in purple) with Radio images from the VLA (blue). Image credit: X-ray: NASA/CXC/UCLA/Z. Li et al; Radio: NRAO/VLA