Top Stories published by Look Upwards in January of 2018

Hanny’s Voorwerp: A quasar’s echo

At first glance, IC 2497 doesn’t look that odd. It is a spiral galaxy roughly 700 million light-years away (for comparison, the Andromeda galaxy is currently 2.5 million light-years away). There are, however, two interesting things about IC 2497 that aren’t immediately…


Was RX J0720.4–3125 once a magnetar?

The Magnificent Seven are, in the field of astronomy, not a group of gunslingers, but a group of neutron stars a few hundred parsecs from Earth. They aren’t near each other, spatially, but they share a number of different properties:


Chariklo and rings around minor planets

In 2013, a team of astronomers (Braga-Ribas et al. (2014)) observed a star called UCAC4 248–108672. However, they weren’t interested in the star itself, but an object moving in front of the star: a minor planet called 10199 Chariklo. Chariklo is a centaur

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