Qicheng Zhang is an undergraduate astrophysics major at UC Santa Barbara. A recipient of a Thomas R. McGetchin Memorial Scholarship from the Universities Space Research Association, Zhang’s award-winning work demonstrates that a comet could be manipulated to mitigate a potential impact with Earth by heating it with a high-powered laser array.
A new study reveals similarities and relationships between certain types of chemicals found on 30 different comets, which vary widely in their overall composition compared to one another. The research is part of ongoing investigations into these primordial bodies, which contain material largely unchanged from the solar system’s birth some 4.6 billion years ago.
A star known as KIC 8462852 in the constellation Cygnus has been raising eyebrows both in and outside of the scientific community for the past year. In 2015 a team of astronomers announced that the star underwent a series of very brief, non-periodic dimming events while being monitored by NASA’s Kepler space telescope. A new study has deepened the mystery.
Astronomers have found the organic molecule methyl alcohol, or methanol, in the protoplanetary disc of TW Hydrae, 175 light-years from Earth — the first such detection of this chemical compound in a young planet-forming disc. Since methanol forms on the icy coatings of dust grains, this discovery provides a window into the region where comets are likely forming.
According to a new international study, most (>80 percent) of the water inside the Moon was delivered by asteroids similar to carbonaceous chondritic meteorites during the early lunar evolution, approximately 4.5—4.3 billion years ago. A similar delivery of water to the Earth would have been occurring within this same interval of time.