*just to be clear, the aliens I am talking about are rocks and not alive nor intelligent. But there may be many of them!
We have found thousands of fully-formed planets, but how do we go about finding those that are hiding in their disks?
Most Jupiter-like exoplanets go undetected. But do they leave a mark on the more easily detectable inner terrestrial worlds?
To understand planet formation, we need to observe newborn planets that are in their earlier stages of development. This is exactly what was discovered around PDS 70 – the first young, forming planet around a protostar of this age. Read more to learn about what we saw, and how we got that data!
The key to understanding how these worlds are built is to consider where they are missing.
On the third day of Christmas the ALMA gave to me, 20 highly resolved protoplanetary disks!