It was generally assumed that the first discovered interstellar object would be an icy body, like a comet. In effect, icy objects are constantly tossed out of their host systems. They are also much more visible due to their apparent coma. However, ‘Oumuamua’s dry appeara...
They also observed that while the object acquired a slight push away from the sun (a “rocket effect” common in comets as sunlight vaporizes the ices they are made of), the push was stronger than could be accounted for. Finally, the object lacked a de...
In thecosmicstage, life's building blocks had their origin in the tiny icy grains ofinterstellar space, the result of thesupernovaexplosion of a nearby star during the formation of the Solar System, about 4.6billion years ago. Comets andcarbonaceous chondrites(asteroids) were accreted from thein...
The study analyzed the composition of these spherules and found the isotope distribution was so unusual they must have an interstellar origin. While that sounds compelling, there are a few caveats. The first is that the trajectory of the 2014 meteor isn’t that precisely known. We know the ...
A search for the origin of the interstellar comet 2I/Borisov. Astron. Astrophys. 634, A14 (2020). ADS Google Scholar Torbett, M. V. Capture of V∞ = 20 km s−1 interstellar comets by three-body interactions in the planetary system. Astron. J. 92, 171–175 (1986). ADS Google ...
(2007) that it is most probably originates from unresolved populations of low-luminosity X-ray binary systems. However, the nature of the dominant class of accreting objects contributing to the diffuse emission in this energy band in different regions of the Galaxy remains unclear. In contrast ...
There has been a long-running speculation discussion among lore buffs around the origin of the Observatories. For myself, I largely look at it through an architectural lens. The Directorate had a very distinctive organic “grown” look to all of their things, including their stations. Veniel ...
of the Royal Astronomical Society. The new results from theAtacama Large Millimeter/Submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is a partner, and from the ROSINA instrument onboard Rosetta, show that phosphorus monoxide is a key piece in the origin-of...
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The second interstellar object, Comet Borisov (also called 2I Borisov), was discovered by Russian amateur astronomer Gennady Borisov on August 30, 2019. Observations revealed a cometary coma and tail as well as an orbit showing an origin from outside the solar system. In many of its propertie...