“It is surprising to find a planet only 5 to 10 percent of Jupiter's mass forming so far out, since planets should form faster closer in,” Weinberger says. “In all planet formation scenarios, it's difficult to make a low-mass planet far away from a low-mass star.”
The Hubble was launched in 1990, and Chandra in 1999. That both continue to return important discoveries is evidence that the money invested in exoatmospheric observatories is the gift that keeps on giving. That should be encouraging for astronomers awaiting the 2018 launch of the James Webb Space Telescope to the Earth-Sun L2 Lagrangian point, where a sunshield the size of a tennis court will chill its detectors to the point that they can see deeper into the red-shifted early Universe than ever before.