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Massive non-cool-core galaxy cluster explored with Chandra

Astronomers have employed NASA's Chandra spacecraft to perform X-ray observations of a massive galaxy cluster known as SPT-CL J0217-5014. Results of the observational campaign, published December 4 on the arXiv preprint server, yield important insights into the properties and

Uranus and Neptune might be rock giants

A team of researchers from the University of Zurich and the NCCR PlanetS is challenging our understanding of the solar system planets' interior. The composition of Uranus and Neptune, the two outermost planets, might be more rocky and less icy than previously thought.