Back Alley Astronomy
Intermittent news from the Milky Way & beyond
Showing posts with label
astronomy
.
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Showing posts with label
astronomy
.
Show all posts
Wednesday, May 31, 2017
The Small Mars Problem
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Figure 1. All planets and dwarf planets orbiting within 6 astronomical units (AU) of our Sun, shown at their relative diameters. -----...
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Monday, January 2, 2017
2016: Backyard Bonanza
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Figure 1. A snapshot of 79 exoplanetary systems located within 20 parsecs (65 light years), arranged by increasing distance from our S...
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