Decades of work have gone into probing the heart of our Milky Way galaxy. Click in for a video showing stars orbiting the 4-million-solar-mass black hole at our galaxy's core.
It isn't one of the brightest stars, but it moves exceptionally rapidly against the background of more distant stars. Its motion reveals its nearness to Earth.
Miska Saarikko caught this daylight meteor Monday morning and wrote: "Got a big one at 04:05 CET. Settings were a bit off in the camera, but still fully visible during sunrise. Taken south of Stockholm, Sweden, from my window." Thanks, Miska!
