ネイティブが教える英会話のジェムスクール☆Teachers☆

This week, May 29th, Mercury will reach greatest elongation for the second time. Greatest elongation means it is the farthest it will get from the sun in the sky, so we will be able to see it best. This time, the planet will be visible in the east near the horizon just before sunrise.
Additionally, on June 1st and 2nd, Mars will pass through the “beehive” star cluster, located in the center of the constellation Cancer. We know that Ancient Greeks and Romans noticed these stars because they characterize them as a giant, deadly crab in the story of Heracles/Hercules. Although this cluster is 7.5 lightyears wide and contains about a thousand stars, they are so far away that the cluster is barely visible from Earth anymore, even by using binoculars.

The beehive cluster from https://phys.org/news/2017-07-bee-beehive-astronomers-binary-star.html
Image credit: Sven Kohle and Till Credner