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It turns out that the interstellar visitor “Oumuamua is just a little guy”

From Popular Mechanics "Data Reaction =" 22 "> From Popular Mechanics The mysterious space traveler Oumuamua was discovered in 201…

From Popular Mechanics “Data Reaction =” 22 “> From Popular Mechanics

The mysterious space traveler Oumuamua was discovered in 201

7 and is the first and only interstellar object we have seen through our solar system. There is a lot of speculation about what “Oumuamua (meaning” a great-distance visitor “in Hawaii) may be, but a new study from NASA’s Jet Propulsion Laboratory (JPL) has some answers.

To begin with: It’s cute little, and the reason why NASA knows this is that it’s frankly not possible to get a good look at “Oumuamua.”

<p class = “canvas-atom canvas text Mb (1.0em) Mb ) NASA has studied the traveler with the Spitzer Space Telescope (SST), an infrared telescope launched in 2003. The last of NASA’s four so-called Great Observatories mentions it in the same breath as more famous space-based telescopes like Hubble. And with a telescope lens 33.5 inches in diameter it can look deep into the solar system. NASA has studied the traveler with the Spitzer Space Telescope (SST), an infrared telescope launched in 2003. The last of NASA’s four so-called Great Observatories is mentioned in the same breath as more known space-based telescopes like Hubble. And with a telescopic lens of 33.5 inches in diameter it can look deep into the solar system.

“Oumuamua turned out to be a challenge. SST pointed to the interstellar object for two months after the nearest pass of the earth, with the object 15 million miles away or so. All that time,” Oumuamua was too weak for the SST to discover . “

<p class =” canvas-atom kanvastext Mb (1.0em) Mb (0) – sm Mt (0.8em) type = “text” content = “” “Oumuamua has been full of surprises from day one, so we were eager to see what Spitzer could show, “said David Trilling, lead author of the new study and a professor of astronomy at North Arizona University, in a press release . “The fact that” Oumuamua was too small for Spitzer to detect is actually a very valuable result. “” Data Reaction = “27”> “Oumuamua has been full of surprises from day one, so we were eager to see what Spitzer could show,” says David Trilling, senior author of the new study and a professor of astronomy at North Arizona University, in a press release. “The fact that” Oumuamua was too small for Spitzer to detect is actually a very valuable result. “

Spitzer’s non-detection allows researchers to understand” Oumuamuas borders. It is “spherical diameter” maxes out to a possible 1,440 meter, 460 foot (140 meters) or perhaps as little as 320 meters (100 meters). The range comes because researchers still are not exactly what Oumuamua is made of.

SST reveals other new information about interstellar visitors. It found “Oumuamua is 10 times as reflective as all comets found in our solar system. When comets come close to stars, their ice-cream interiors melt into a gas.

Since “Oumuamua has been on an interstellar journey between star systems, its exterior could have been built up to the extent that a huge amount of gas could have been released when it came close to the sun. When the mountain flew through space away from the sun, the released gas would freeze again and become an extremely glossy surface.

<p class = “canvas-atom canvas-text Mb (1.0em) Mb (0) – sm Mt (0.8em) – sm” type = “text” content = “Many mysteries about” Oumuamua can remain unanswered. Unless it’s really a strange probe, as a Harvard scientist recently suggested leaves our solar system and will not return. It is already too far for a space-based telescope to detect. “Omauamua mysteries” can remain unanswered. If it’s not an extraterrestrial probe, as a Harvard scientist recently suggested, our object will leave our solar system and will not return. It’s already too far for a space-based telescope to detect.

“Usually, if we get a measurement from a comedy that’s so weird, we’ll go back and measure it again until we understand what we see,” said Davide Farnocchia. of the Center for Near Earth Object Studies (CNEOS) at JPL. “But this one is gone forever. We probably know so much about what we will ever know. “

<p class =” canvas-atom canvas text Mb (1.0em) Mb (0) – source:

NASA “data -reactid = “44”> Source: NASA

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