ESOshop: Mounted image 084: Dust and stars towards the heart of the Milky Way
A mosaic of images from the VISTA survey telescope looking towards the centre of the Milky Way in the constellation of Sagittarius (the Archer) reveals around one million stars, most of them not seen in visible light pictures. As well as absorbing light, interstellar dust scatters blue light from the more distant stars, which is why the centre of the image looks red.
ESO/VISTA. Acknowledgment: Cambridge Astronomical Survey Unit