‘Question-mark-shaped cloud’ left after meteor streaks across California sky


December 21, 2018 21: 31:07

An intense item that spotted across the sundown sky in the San Francisco Bay Location in California left a path that some referred to as looking like a shining enigma, with lots of residents puzzled about what might have triggered it.

Bottom line:

  • The National Weather Condition Service and Lick Observatory both recommended a meteor triggered the odd cloud
  • The curled shape with a gleaming tail remained noticeable in the sky for a long time
  • NASA stated meteor smoke might make odd clouds called noctilucent clouds

Many Bay Location locals caught video and pictures of the item and the gleaming path it left behind in the sky, and published to social networks with concerns about what they were.

It left behind a curled shape with a luminescent tail routing after it that remained noticeable in the sky for a long time as the sun was setting, and looked definitely like a huge enigma.

The regional National Weather condition Service (NWS) tweeted a picture of the light and stated it believed the item that triggered the uncommon cloud development might have been a meteor.

The Lick Observatory in San Jose, nevertheless, was more particular.

“A bright meteor was visible in the skies over the Bay Area shortly after sunset this evening, leaving a bright trail that was visible for many minutes in the western sky,” it stated in a declaration on Facebook.

According to NASA, smoke from meteors can create unusual “noctilucent” clouds that shine in golden or night-time skies.

“Anyone who’s ever seen a noctilucent cloud or ‘NLC’ would agree: They look alien,” it stated it a declaration on its site.

“The electric-blue ripples and pale tendrils of NLCs reaching across the night sky resemble something from another world.”

According to NASA, noctilucent cloud-spotting has actually gone back to the late 19 th century.

They were very first discovered in 1885, about 2 years after the eruption of Indonesian volcano Krakatoa, when ash triggered such significant sundowns that enjoying the sky at night ended up being an international leisure activity.

A German guy called TW Backhouse is frequently credited with very first finding NLCs, NASA stated, after he discovered wispy filaments radiant electrical blue versus the sky on some nights.

Researchers at the time believed they were residues of volcanic dust, however they did not dissipate after the ash from the Krakatoa eruption lastly settled.

Scientists now think it is space dust that triggers the uncommon cloud developments, NASA stated.

In the 19 th century, NLCs were mainly found in greater latitude nations such as Canada, and those throughout Scandinavia.

More just recently however, NASA stated, they have actually been seen even more south in Colorado, Utah, Nebraska– and now, it appears, California.







First published.

December 21, 2018 20: 50:34

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About the Author: Dr. James Goodall

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