Researchers at the Center for Marine Debris Research at HawaiĘ»i Pacific University have presented early results showing that discarded fishing nets and household plastic waste can be blended into asphalt roads in Hawaii. The work, described in an ACS announcement, suggests that recycled plastic pavement can perform as a practical destination for waste already accumulating…
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A study posted on arXiv suggests that about 300 years ago, a compact swarm of massive stars may have carved a nearly round hole in the glowing gas near the Milky Way’s central black hole. The target is the mini-cavity, a low-density pocket inside the ionized gas known as the mini-spiral around Sagittarius A*. The…
A study in Nature Astronomy has traced a puzzling repeating radio signal to a white dwarf binary, giving astronomers one of their clearest identifications yet for a rare class of slow cosmic pulses. The system, called ASKAP J174508.9-505149, contains a dense stellar remnant that is pulling material from a small companion star. The discovery matters…
Researchers at McGill University and Strategic Threat Analysis and Research Laboratories have raised a startling question for the next era of space exploration. If future missions bring samples home from Mars, icy moons, or other worlds, should those materials stop on the Moon before reaching Earth? The proposal appears in a policy paper published in…
