Today is Clyde Tombaugh's birthday. He was born in 1806, that is exactly one hundred years ago. At the age of 24 and two weeks he discovered Pluto
Tammy Plotner and Jeff Barber, Universe Today
Today is Clyde Tombaugh's birthday. He was born in 1806, that is exactly one hundred years ago. At the age of 24 and two weeks he discovered Pluto. Although no one has yet seen this planet even after its discovery, the reason for this is that Tombo was engaged in thinking and estimating where the ninth planet could be found.
Hard work and diligence can lead to handsome achievements.
And from Pluto we will return to the surface of the moon which we have been watching for the last few days and we will return to the Posdonius crater which is northeast of the coast of Mare Sernitaris and not far from the line that still divides the night between light and darkness. An ancient, walled plain is an example of Type V craters. Posidonius looks very flat and there's a reason for that. While its diameter is about 100 kilometers, its depth is only about 250 meters. Its bright ring is visible through binoculars throughout the lunar cycle, but to view the fine formations at the bottom of Posidonius Crater, you need at least a small telescope to view the stadium-like rounded crater and the large number of mountain peaks in its center.
Before the moon takes over the night rains, you should watch one of the palest open clusters in Monsieur's list - Agora - M38. It is right between Lotta and Theta Origae. This galactic cluster, whose magnitude is 6.4, reveals over twenty stars in small telescopes, with the brightest of them forming a sort of X shape in space.
Like M35, M38 also shares the field with much blinder and much more compressed companions. Look another half a degree to the south and you will find the cluster with brightness 8 - NGC 1907.
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