All posts by jagrier

By jagrier on October 20, 2017 in

Impact craters come in all sizes, because impactors come in all sizes. At the smallest size are microscopic particles of dust. They may be tiny, but as noted in the last post, they are traveling very fast, and so they impact with plenty of energy. On a world like the Earth, little bits of dust […]

By jagrier on October 13, 2017 in

It turns out that “rocks running into other rocks” is a pretty complicated process. The most important aspect of the process is how much energy is involved. The two factors in finding the energy of an impact are (1) how much mass is in the impactor, and (2) how fast it is moving. The bigger […]

By jagrier on October 6, 2017 in

Several of the mapping tasks here at CQ include marking the size and position of impact craters. Why is this so important, and how does so much science come out of these measurements? We’ll answer these questions in a series of posts about impact craters, starting here with Impact Events. Impact craters are the scars […]

By jagrier on September 28, 2017 in

The over 2 million images taken by people living and working in space have made possible a host of important scientific research investigations. These include monitoring changes as they happen in real time, as well as mining past images to examine changes that happen much more slowly. We can also use these data to investigate […]

By jagrier on August 31, 2017 in

This post is from Jennifer Grier, one of our CosmoQuest team members from our partner the Planetary Science Institute. I had the opportunity to view the eclipse with my husband and fellow scientist Andy Rivkin, and fellow PSI scientist Karen Stockstill Cahill, along with about 200 other folks on the lawn at the John’s Hopkins […]