Orion the Hunter is one of the sky's most noticeable constellations. Sirius is the sky's brightest star. As Earth revolves around the sun, they're both about to disappear for awhile. Here's how to star hop from Orion's Belt to Sirius.
Data from ESA’s Gaia star-mapping satellite have revealed tantalizing evidence that the famous V-shaped Hyades - nearest star cluster to our sun - is being disrupted. The culprit may be a suspected population of dark matter sub-halos. Wow!