April 5, 2019 (2019-04-05) (Friday)
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Science and technology
- A small 5-200 kilometer planetesimal, with a similar mineral composition to Earth, is found orbiting in the debris disk of a white dwarf star. This discovery is among the first of its kind and expected to provide insight into the future of our own planetary system. (Astronomy.com)
- JAXA space probe Hayabusa2 successfully fires a bullet at Apollo asteroid 162173 Ryugu, forming a crater which will be used to collect underground samples. (AP)