The New Horizons spacecraft is heading towards a mystery rock

 作者:柳利     |      日期:2019-03-14 04:13:01
NASA/JHUAPL/SwRI/Henry Throop By Joshua Sokol The thrusters have fired, the clock is ticking. Humanity’s envoy to the outer solar system, the same New Horizons probe that flew over Pluto in the summer of 2015, will meet a faint speck of light called MU69 on New Year’s Day, 2019. There’s just one problem: we still don’t know what MU69 looks like. It might be a misshapen potato, two rocks touching each other like Chinese stress balls, or even a binary,