Astronomers have measured differential rotation in 13 Sun-like stars where equatorial zones rotate faster than higher latitudes, a phenomenon thought to play a major role in the generation of sunspots and magnetic fields.
Skywatchers in the UK looking to the south-southwest at dusk on Monday, 17 September can see the waxing gibbous Moon just 1¾ degrees to the upper left of Saturn, the pair fitting comfortably in the same field of view of binoculars and small telescopes magnifying 25× or less. This is also a good night for spotting Titan, Saturn’s largest and brightest moon.
It’s holiday time again and the keen observer is faced with the usual dilemma: how does one carry a telescope small enough to be useful to far-flung dark and exotic skies? Fortunately for globe-trotters concerned about optical size and weight, Telescope Service in Germany has the TSAPO60 — a compact and very versatile photo-visual 60mm f/5.5 ED refractor.
The Phoenix dwarf galaxy defies easy classification, without enough mass to form new stars but. But gas ejected from supernova blasts indicates star formation in the recent past with the possibility of more int the future.