Rings around Uranus

23 Jun 2019

At https://phys.org/news/2019-06-astronomers-uranus.html ... astronomers see a warm glow emanating from the rings of Uranus - via the ALMA telescope array. Its most prominent ring is composed of golf ball size rocks and larger - and there are 13 rings in all.

At https://phys.org/news/2019-06-stars-photons-revolutionize-space-flight.html ... star photons may revolutionise space flight - the solar sail. It has no engine, uses no fuel, and has no solar panels. Instead, it harnesses the momentum of light energy (photons). Will it work?

At https://wattsupwiththat.com/2019/06/22/nasa-selects-missions-to-study-ou... ... NASA will at some point put in place a mission focussed on the Sun and how it effects space weather. The idea is to specifically have a look at the solar wind and the impact it has on earth's magnetic field. What drives space weather? The PUNCH mission will image and track solar outbursts (CMEs). The TRACERS mission is a secondary payload of PUNCH - in order to get a greater scientific return (with an overview of the effects at the North Pole). See also https://explorers.gsfc.nasa.gov for further information.