1. Extra credit paper due Dec. 4
For 10 points possible credit, write another paper, 2 pp. minimum, on one of 3 topics, using at least 3 references:
Exoplanets: seven Earth-sized planets orbit a star called TRAPPIST-1.
Exoplanet around Barnard’s star: An exoplanet with around 3 times the mass of Earth has been found orbiting Barnard’s star, which is the second-closest stellar system (after the Alpha Centauri system).
Interstellar asteroid: an object from outside the Solar System has been found travelling relatively close to Earth.

2. Guidelines for paper research
Possible web sites that may have accurate articles are
en.wikipedia.org (may be too technical)
(lots of ads, though)
Try using google.com and search for TRAPPIST-1, “Barnard’s Star”, or Oumuamua
You can restrict the search to a particular site by adding the expression site:astronomy.com or something similar, and you will only get articles from that web site.