The asteroid Jürgenstock will block Monday night the brightest star, Sirius
[ad_1] Sirius, a two-star system and the brightest object in the night sky, will disappear briefly for part of the Earth on Monday night. In an event called occultation – when an object in space blocks another's light behind it – a small asteroid called (4388) Jürgenstock slips in front of the star for a … Read more