You are currently browsing the daily archive for September 19, 2019.

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Ok, I’ll admit it, maybe I still have some “panda-monium” in my system from Tuesday’s announcement about the 2022 Olympic mascot, Bing Dwen Dwen, an adorable panda wearing some sort of ice hauberk.  To follow up on that post, here is a picture of a baby panda in China which was just born with white and gray fur.  What’s the story here?

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Now everyone knows that pandas are black and white (except for the red panda, which is really a whole different sort of animal), however it turns out there are a couple of mysterious off-color giant panda clans out there in the bamboo forests. Apparently a family from Chengdu Research Base of Giant Panda Breeding sometimes has gray and white cubs.  Pandas from the so-called Gray family look wise beyond their years at first but then turn to normal white and black as they grow into adulthood.  Here is Chengshi, another gray-and-white cub born a few years ago who matured into a lovely black-and -white goofball.

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However, the Gray family of color-changing gray pandas is not the most dramatic clan of differently colored giant pandas.

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This is Qi Zai, the world’s only captive brown and white panda.  Qi Zai is from the distant Qinling Mountains in Shaanxi, where a subspecies of brown and white pandas appropriately known as Qinling pandas are known to reside.  Qinling pandas are rarely spotted in the forest fastnesses of their remote home.  The pandas are reputedly somewhat smaller (and more sensitive) than their black-and-white relatives.  Zoologists are still arguing about how to classify the brown and white pandas (are they a true sub-species, or just an unusual family), but it seems like they are certainly the rarest of the rare.  It is is estimated that only 200-300 exist in the whole world.

Boy, this has been an intense week for astronomy news. First there was the largest neutron star ever discovered (it would take an eighth grader nearly an hour to bicycle a distance equivalent to its diameter!), then there was the story about Tabby’s Star gulping down exoplanets and pulverizing a moon (Ferrebeekeeper didn’t post that one, but you can read about it here) and now, today brings reports of another extra-solar mystery object akin to the mysterious Oumuamua which caused such a sensation back in 2017.

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C/2019 Q4 (Borisov) in the middle of the image: Note the faint tail!

Back in August 30, 2019, Gennady Borisov, an amateur astronomer from Ukraine, spotted an unknown comet which has been dubbed “C/2019 Q4 (Borisov)”.  Not only is the comet traveling at the blazing speed of  150,000 kilometers per hour (93,000 mph), it also has a hyperbolic orbit (meaning the object is not bound to the solar system) and it is approaching from a strange angle which in skew to the planar disk of the solar system.

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At present the comet is far away from Earth and yet approaching on a path which puts the sun between us and the object (astronomers don’t like pointing their telescopes into the sun for some reason), however the mysterious object should approach as close as Mars at which point we will be able to learn more about it.  Right now all we know is that C/2019 Q4 (Borisov) has a diameter between 2.4 and 15 kilometers (1.5 to 10 miles) and doesn’t seem to be from around here.  Whereas Oumuamua zipped through before we could get a good handle on it, we should have a chance to properly study this comet. Since comets (unlike strange asteroid shards) are volatile, we should be able to get a sense of its composition by studying the makeup of the tail.  Stay tuned for more news about this peculiar object!

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