U.S. Naval Observatory articles over last 30 days

- articles last 30 days - articles per day
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2015/07/30 19:40
2015/07/30 19:40
1m
If anything unusual happens to you Friday, you'll be right to say it was "once in a blue moon." The July 31 appearance of the month's second full moon will be the first such occurrence in the...
2015/07/30 19:40
2015/07/30 19:40
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2015/07/30 11:07
2015/07/30 11:07
7h
A blue moon is a rare event, and we haven't been able to see one for quite a while. If you're not doing anything Friday, you should head outside so you can catch the rare event for yourself. This...
2015/07/29 13:17
2015/07/29 13:17
1d
A blue moon really does happen once in a blue moon, and we haven't seen one in several years. If you're not doing anything Friday, you should head outside or get yourself to a window so you can catch...
2015/07/22 12:39
2015/07/22 12:39
8d
The triple crescents of Saturn’s moons Titan, Mimas and Rhea. Credit: NASA/JPL-Caltech/Space Science Institute Like splitting double stars, hunting for the faint lesser known moons of the solar system...
2015/07/15 18:33
2015/07/15 18:33
14d
The spotlight is bright enough to thaw even Pluto. Well, not quite, but the tiny, icy world is getting front-page, prime-time attention for its first visit by a spacecraft — NASA's New...
2015/06/30 20:20
2015/06/30 20:20
29d
DETROIT, MI -- They say there are only 24 hours in a day, but procrastinators and the sleep deprived can rejoice tonight in the knowledge that they'll get one extra second, thanks to a directive from...
2015/06/30 02:55
2015/06/30 02:55
30d
You’ve heard of leap years. Now meet the leap second. While a normal day lasts 86,400 seconds, this Tuesday—June 30, 2015—will last 86,401, in order for timekeepers to account for the Earth’s...
2015/06/29 23:12
2015/06/29 23:12
30d
... — On June 30, time will stand still. Just for a second — a leap second. Since 1967, when clocks went atomic, human timekeeping has been independent of the earth's rotation. The problem...
2015/06/27 21:19
2015/06/27 21:19
m
Surveying our star-spangled sky for July, Venus and Jupiter prepare for a cosmic embrace after dusk in the west, Saturn strolls the southern heavens, we get close-ups of Pluto and if you wash your car...
2015/07/30 19:40
2015/07/30 19:40
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