Some of the latest¹ data about the universe, especially exoplanets

   (according to astrophysicist

   Dr. Neil deGrasse Tyson)


To see this use the DOOR.




   Five Comments from Tyson¹

   (1)  The first exoplanet (a planet beyond our solar system) was discovered in 1995.

   (2)  The number of discovered exoplanets is “rising through 3000.”

   (3)  Most of these exoplanets have been found in “a small pocket of the Milky Way around the solar system…[and] there’s plenty more where they come from.”

   (4)  Our galaxy (the Milky Way) contains “more than 100,000,000,000 galaxies.”

   (5)   “Latest estimates, extrapolating from the current catalogs, suggest as many as 40,000,000,000 Earth-like planets in the Milky Way alone.”


   It’s important to realize that “Earth-like” means that some kind of life as we think of it could possibly exist. To have “Earth-like” creatures of any kind, let alone humans, involves much more than having a similar planet “underfoot.” How inorganic materials could “assemble” into plants or creatures is another issue–not one considered here.


   ¹ Cited information (in quotes) is from Neil deGrasse Tyson’s Astrophysics for People in a Hurry (Norton, 2017, p. 192). Realize the date here. “2017” in astrophysics nowadays means “dated” information. According to other NASA info ongoing space research has caused these numbers to to slowly increase from week to week. We converted Tyson’s word numbers to numerals.