Read news from the world of astronomy for the week of June 20, 2025.
This week in the world of astronomy, explore silicate clouds in a multi-planet system and a bright nova in lupus. Plus, spot the missing quasar in the Chandra X-ray Observatory's images for yourself.
New observatories in space and on the ground are providing us with our best views yet of the Sun — providing insight into puzzles that have remained unsolved for decades.
Today's the longest day and the shortest night of the year for the Northern Hemisphere and vise versa for the Southern Hemisphere. Summer begins at the solstice, 10:42 p.m. EDT or 2:42 UT on June 21st. Watch Mars and Regulus draw farther apart this week as they sink in the west during and after late twilight.
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TimeBox II synchronizes a Windows PC clock to GPS (UTC) time with millisecond accuracy, enabling reliable dating of astronomical events - especially useful for occultation observations.