Picture This

Jovian moon shadow

27 October 2017 Astronomy Now

Jupiter’s moon Amalthea casts a shadow on the gas giant planet in this image captured by NASA’s Juno spacecraft. The elongated shape of the shadow is a result of both the location of the moon with relation to Jupiter in this image as well as the irregular shape of the moon itself.

Picture This

Revealing galactic secrets

26 October 2017 Astronomy Now

Countless galaxies vie for attention in this monster image of the Fornax Galaxy Cluster, some appearing only as pinpricks of light while others dominate the foreground.

Observing

See fragments of Comet Halley light up the night sky this weekend

21 October 2017 Ade Ashford

If skies are clear between midnight and the first glimmer of dawn this weekend, you may get to see up to 20 celestial fireworks per hour from the Orionid meteor shower. While far from the richest of the annual shooting star displays, the Orionids are particularly swift and have their genesis in particles strewn along the orbit of Comet Halley.

News

NASA’s Dawn mission gears up for close look at Ceres

20 October 2017 Stephen Clark

NASA’s Dawn spacecraft will remain at Ceres for the rest of its mission, heading closer to the asteroid belt’s largest resident than ever before to obtain new measurements of ice, salts and a tenuous intermittent atmosphere detected around the dwarf planet, the space agency announced Thursday.