Constellations Eighty-Eight

Everything you want to know about NASA's "Mars Perseverance rover" and its landing - refer to below link https://mars.nasa.gov/mars2020/timeline/landing/  

  Source-http://blog.simulationcurriculum.com/articles/2015/5/15/measuring-distances-in-the-sky During night sky observation it becomes necessary to measure the distances( in degrees) between 2 stars. It is very important to stretch your hand to get good results. Please refer to below image. Source - https://www.exploratorium.edu/snacks/handy-measuring-tool For further reading refer to below links- http://blog.simulationcurriculum.com/articles/2015/5/15/measuring-distances-in-the-sky https://www.exploratorium.edu/snacks/handy-measuring-tool