SUMMARY: A new article published in the journal Nature helps settle a long-time mystery about some of the earliest solid particles in the Universe. By measuring supernova remnant Cassiopeia A with the very precise SCUBA telescope, astronomers were able to detect enormous quantities of cosmic dust below -257 degrees celsius. Hot dust had been found in the past, but the colder dust was mostly invisible - until now. It appears that supernovae are extremely efficient at producing the dust that later forms planets, rocks, and people.

View full article
What do you think about this story? post your comments below.