A rare interstellar comet reveals its secrets and 5 other top space and science stories this week #Breaking112
Welcome to Wonder Theory, your weekly space and science digest.
The CNN Space and Science team has produced a veritable sandbox of space and dinosaur stories, among other fascinating science news articles, that delighted and amazed us this week.
Join us for a brief journey through these wonders, both of this world and far, far away.
Across the universe
The comet, called 2I/Borisov, remained unaltered since its formation — that is, until it flew by our sun in 2019.
Little pebbles detected in the dust around the comet have suggested the comet is made of materials from different parts of its original planetary system. Like in our own solar system early on, the presence of giant planets and their gravity may have caused this mix, stirring up material throughout the system.
This tells us comet 2I/Borisov was born in a distant system that may not be that different from our own.
A long time ago…
The Kalahari Desert was a much more welcoming place about 100,000 years ago. That’s why the now-arid desert has become an area of interest for those studying how early modern humans evolved.
The ostrich shells may have even been used as early water bottles.
A well-preserved fossil of Llukalkan aliocranianus was found in the Bajo de la Carpa Formation in Argentina. In life, the dinosaur likely resembled a Tyrannosaurus rex, with the exception of its unusually short and deep skull, covered in bumps and horns.
The brain case of the dinosaur revealed it had a small air-filled sinus in the middle ear zone, which likely caused it to hear differently — and better — than other predators. And you wouldn’t have wanted to stumble into the path of this carnivore, with all those sharp teeth in sight.
The night sky
Let’s hear it for the full moon, which helped put an end to the long nightmare of the boat stuck in the Suez Canal.
While there are 12 to 13 full moons in a year, only six to eight are associated with a tide high enough to do what was done on Monday — because the moon is closest to Earth during those full moons, CNN meteorologist Judson Jones said.
Never say our lunar neighbor isn’t a helpful one.
Force of nature
Thunderstorms need warmth to form, and the Arctic has been warming more than twice as fast as the rest of the planet. Arctic lightning has tripled in the last decade, according to new research published this week.
The risk is even greater for the Eastern Hemisphere of the Arctic Circle, specifically in the air over Siberia. This is concerning because the area has experienced more wildfires in recent years.