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Maybe it's an asteroid. It could be a comet. Maybe it's … something else. But since humanity last year noticed its first interstellar visitor, Oumuamua – an elongated part of something that spins through our Solar System – has managed to add us a slip.
It came from an unexpected detection.
She did not see until she turned to the sun.
Once again it is expanding into a deep space.
NASA has released a new study stating that when he pointed out his infrared Spitzer Space Telescope to Oumuamoui in November last year, he saw … nothing.
What is, in itself, to say.
"Oumuamua was too weak for Spicer to discover when he looked more than two months after the closest approach to Earth in early September," says NASA. "However," non-disclosure "sets a new boundary how big a strange object can be."
He also points out that Oumuama was unusually bright.
When Oumuamua was first seen falling by the sun, there seems to be no tail-how comets do-caused by the ice that is lurking in space.
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But since then, an interstellar object has been recorded to slightly change course – and accelerates a bit of comedy like a comet, under the thrust of ice-heated from the sunlight into the discharged gas.
Is it an alien space probe, as suggested by an Harvard academician (who is himself a proxy sending probe near Prokima)?
Or is it something else – a strange fabrication of interstellar substances, unlike what we have ever seen?
Make-up a new light
The new study now suggests that "Oumuamua can be up to 10 times more reflective than the plastering that is usually found in our solar system.
That's surprising.
"Oumuamua traveled through the interstellar space for millions of years, away from any star that could refresh his surface," the NASA report said. "But maybe his surface was refreshed through such" outgassing "when he made an extremely close approach to our Sun, just over five weeks before it was discovered."
This "outgassing" would emptied and pour on the surface of Oumuamu, and potentially it was possible to harden fresh deposits of highly reflective ice in its place.
And this light may have led Oumuama to look larger than it actually was an optical telescope, such as Hubble.
NASA now thinks less than half of the original estimates of its size and that it is somewhere between 400 and 100 meters instead.
"Usually, if we get a measure from a comet that's kind of weird, let's go back and measure it again until we understand what we see," said NASA Davide Farnocchia. "But this has disappeared forever; we probably already know about how we will ever know."
NASA concludes that the gas vents from the Oumuamua surface have a slight increase in speed, as suggested earlier this year.
Observations of Spitzer's space telescope – despite not seeing "Oumuamu" – reveals that it must be small enough for such acceleration.
"This decision depended on" Oumuamu is relatively smaller than the typical solar system comets, "NASA said.
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"Oumuamua was first detected at the Pan-STARRS 1 University of Hawaii Pan-STARRS 1 in Haleakala, Hawaii in October last year. Its name is a Hawaiian word meaning" visitors who come far ".
Hubble looked at him. They also did some terrestrial telescopes. They saw that they reflect the sun's light – but that varied dramatically. It was suggested that the Oumuamua was elongated and the length was less than 800m.
TO BE OR NOT TO BE?
That does not do anything to confirm – or reject – the recent controversial claims of two Harvard professors, Shmuel Biali and Abraham Loeb.
"The more exotic scenario is that" Oumuamua may be a fully operational probe that an alien civilization deliberately directed the Earth around, "they wrote.
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But it was pure speculation, based only on the unusual speed and course of the object.
However, if this is so reflexive, you could add fuel to the idea of a 'party space'. Bright nuclei work in a similar way, the winds of the wind – they use the energy of solar winds by reflecting them in the other direction to generate a thrust.
And the smaller size calculated by Spitzer's observation is also the argument that proponents of the spacecraft will be discarded: Harvard professors themselves advocate for "star chips" – small probes with a solar core – launched on nearby stars.
But NASA's observations also make it more likely that Oumuamua is a dirty interstellar comet, adorned with nanoscale for thousands of years in an interstellar space. Once pretty close to the Sun, in order to do so, a great internal core was exposed – by changing its characteristics in a way that would alter its orbit.
However, we will never find out for sure.
There is no way to look at the rapid withdrawal of the enigma.
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