Science Updates - A look at CfA discoveries from recent journals

 multiwavength image of a Lyman alpha galaxy
May 22, 2020

Massive galaxies in the local universe, in order to be large today, probably began forming their stars in the early universe. Astronomers do indeed see significantly enhanced star-formation activity in distant galaxies and find that the peak star formation rate occurred when the universe was only about two billion years old.

MEarth-South array
May 15, 2020

Of the roughly 4300 exoplanets confirmed to date, about ten percent of them are classified as "hot Jupiters." These are planets with masses between about 0.4 and 12 Jupiter-masses and orbital periods less than about 110 days (implying that they orbit close to their star – usually much closer than Mercury is to the Sun - and have hot surface temperatures).

 NGC 5044 galaxy group
May 8, 2020

Our Milky Way is a member of a cluster of galaxies, the co-called "Local Group," about fifty galaxies whose other large member is Andromeda about 2.3 million light-years away. Most galaxies lie in clusters, and the closest large cluster of galaxies to us is the Virgo Cluster with about 2000 members.