ʻOumuamua is remarkable for its extrasolar origin, high obliqueness, and observed acceleration without an apparent coma. By July 2019, most astronomers concluded that it was a natural object, but its precise characterization is contentious given the limited time window for observation.

2024年12月5日 · ‘Oumuamua is t he first confirmed object from another star to visit our solar system. This interstellar interloper appears to be a rocky, cigar-shaped object with a somewhat …

2018年6月27日 · Because of its high speed (196,000 mph, or 87.3 kilometers per second) and the trajectory it followed as it whipped around the Sun, scientists are confident ‘Oumuamua originated beyond our solar system.

2018年7月2日 · ‘Oumuamua entered our solar system from the rough direction of the constellation Lyra, but it’s impossible to tell where it originally came from. Thousands of years ago, when ‘Oumuamua started to wander from its parent planetary system, the stars were in a different position so it’s impossible to pinpoint its point of origin.

The first known interstellar object to visit our solar system, 1I/2017 U1 ‘Oumuamua, was discovered Oct. 19, 2017 by the University of Hawaii’s Pan-STARRS1 telescope, funded by NASA’s Near-Earth Object Observations (NEOO) Program, which finds and tracks asteroids and comets in Earth’s neighborhood.

2023年9月19日 · 1I/'Oumuamua was a small object that came from interstellar space and passed close to the sun as it traveled through the inner solar system in the autumn of 2017. It was notable because it was the...

2023年3月22日 · In October of 2017, astronomers in Hawaii spotted an object they called 'Oumuamua, which means "a messenger from afar arriving first," according to NASA. The reddish object was shaped like a cigar...

2023年3月22日 · Scientists have a new idea to explain the strange behavior of ‘Oumuamua, our solar system’s first known interstellar visitor. In October 2017 astronomers first spotted the object by chance as it...

2018年6月27日 · Using observations from NASA’s Hubble Space Telescope and ground-based observatories, an international team of scientists have confirmed ′Oumuamua (oh-MOO-ah-MOO-ah), the first known interstellar object to travel through our solar system, got an unexpected boost in speed and shift in trajectory as it passed through the inner solar system last year.

2018年6月27日 · Using observations from NASA’s Hubble Space Telescope and ground-based observatories, an international team of scientists has confirmed ‘Oumuamua (oh-MOO-ah-MOO-ah), the first known interstellar object to travel through our solar system, got an unexpected boost in speed and shift in trajectory as it passed through the inner solar system last year.