Some celestial yardsticks are seen within the night time sky


The stars Vega, 61 Cygni and Delta Cephei are situated close to the zenith, or the purpose instantly overhead, round 8 p.m. native time as seen from mid-northern latitudes.  (Image credit score: SkySafari app)

One of the questions I’m typically requested is, “How do astronomers know how far away a star or a distant galaxy happens to be from Earth?” In our sky this week, there are three stars which have been used to exhibit the way to measure stellar distances: Vega, 61 Cygni and Delta Cephei.

In article ad

Step outdoors at round 8 p.m. native time because the sky is getting darkish, look straight up above your head and you will see Vega within the constellation of Lyra, the lyre, shining with an excellent, bluish tinge. It’s the second-brightest star of our present night sky. 

Source link

Leave a reply

Please enter your comment!
Please enter your name here