A cigar-shaped object seen floating through space could be an alien probe, Harvard researchers suggest.
In a study published last week by the Harvard Smithsonian Center for Astrophysics, researchers say the object, dubbed 91裸聊视频淥umuamua,91裸聊视频� is the first object of 91裸聊视频渋nterstellar origin91裸聊视频� observed in our solar system.
91裸聊视频淥umuamua may be a fully operational probe sent intentionally to Earth91裸聊视频檚 vicinity by an alien civilization,91裸聊视频� researchers said.
NASA believes Oumuamua, which was discovered last fall by the University of Hawaii91裸聊视频檚 Pan-STARRS1 telescope, is about 400 metres long, and made up 91裸聊视频渙f rock and possibly metals, has no water or ice, and that its surface was reddened due to the effects of irradiation from cosmic rays over hundreds of millions of years.91裸聊视频�
It is forecast to travel beyond Saturn91裸聊视频檚 orbit, as it shoots through space at a speed of 38.3 kilometers per second.
The Harvard study91裸聊视频檚 authors acknowledged that an alien space probe is a 91裸聊视频渕ore exotic scenario,91裸聊视频� and said Oumuamua could be either naturally occurring or accidental space debris, albeit still from a mystery source.
However, its mass-to-area ratio makes it unlikely that it91裸聊视频檚 merely an oddly shaped asteroid or comet.
Either way, researcher said it was too late to photograph Oumuamua with existing telescopes or to chase it with chemical rockets.
Instead, researchers, and the rest of us, will have to wait for a new Oumuamua to appear before we can discover what it really is.
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