Clear nights of early Northern Hemisphere autumn offer ideal opportunities to track down the two outermost planets of the solar system, Uranus and Neptune. What’s more, you don’t need a big telescope to find them. We show you how to locate these gas giants using binoculars. The Moon also passes close to Neptune on 20 October.
Have you ever seen the closest planet to the Sun? If you wish to tick Mercury off your To-See list, particularly if you live in the Southern Hemisphere, now until the middle of May is the time to be scrutinising the eastern sky about an hour before sunrise. Mercury also has a close encounter with an old crescent Moon on 14 May.
Currently setting over four hours after the Sun as seen from the heart of the UK and visible in the west-southwest at dusk, dazzling Venus is about to hit peak brightness in the constellation of Pisces. The planet attains magnitude -4.8 on Friday 17 February — some 21 times the luminosity of brightest star Sirius gracing the southeast horizon as darkness falls.
The brightest area on Ceres stands out amid shadowy, cratered terrain in a dramatic new view from NASA’s Dawn spacecraft, taken as it looked off to the side of the dwarf planet. Dawn snapped this image from about 920 miles (1,480 kilometres) above Ceres in its fifth science orbit, in which the angle of the Sun was different from that in previous orbits.
Ceres, the largest minor planet inside the orbit of Neptune, passed closest to Earth on the evening of 22 October — the night of the last quarter Moon. With the lunar crescent now confined to the morning sky, grab your binoculars or telescope, print out some star charts from our online guide and track down the brightest of the dwarf planets while at its best.
Have you ever seen Uranus with the naked eye? If not, moonless nights in October offer ideal conditions to test your visual acuity and sky clarity. Uranus reaches opposition on 15 October and attains a respectable altitude in the southern sky as seen from the British Isles. Here is our guide to tracking down the seventh planet from the Sun.
A subsurface ocean lies deep within Saturn’s moon Dione, according to new data from the Cassini mission. Two other moons of Saturn, Titan and Enceladus, are already known to hide global oceans beneath their icy crusts. Researchers believe that Dione’s crust floats on an ocean several tens of kilometres deep located 100 kilometres below the surface.