galactic clusters – Astronomy Now

25 March 2019

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[ 24 March 2019 ] Visualizing the chaos near the Milky Way’s central black hole News
[ 21 March 2019 ] Rumors of a quasar’s death may have been premature News
[ 20 March 2019 ] Asteroid Bennu surprises with rocky surface and activity News
[ 19 March 2019 ] Ultima Thule answers – and raises – questions about early solar system News
[ 18 March 2019 ] Astronomers find 83 quasars already shining in early universe News

Hubble captures extremely remote galaxy cluster

16 April 2018 William Harwood

The Hubble Space Telescope’s Advanced Camera for Surveys and Wide Field Camera 3 captured an image of a massive galaxy cluster some six billion light years from Earth, part of a program to find targets for the James Webb Space Telescope.

Jupiter’s moons, black holes, exoplanets among JWST’s first scientific targets

4 December 2017 Stephen Clark

The James Webb Space Telescope should start returning its first scientific results by the end of 2019, and scientists recently announced a slate of observations selected to whet the appetites of astronomers who will use the multibillion-dollar facility well into the 2020s.