Many colors from a single dot

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Physicists have shown how even a separate single nanoparticle can be used to emit different colors of light. Their results show that the particles under consideration may be a very efficient and versatile tool to produce light of all colors at tiny scales.
via Science Daily

Out There: Astronomers’ Dark Energy Hopes Fade to Gray

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The Wfirst project, which would have investigated the force of dark energy in the universe and searched for more planets, has been cut from NASA’s proposed budget.
via New York Times

Off-piste

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Space Science Image of the Week: These enticing peaks in the outer Solar System would challenge even skilled Olympic skiers
via ESA Space Science
http://www.esa.int/ESA_Multimedia/Images/2018/02/Saturn_s_B_ring_peaks