Story thread · 3 reports / 3 sources
A moon for Mars! Asaph Hall finds Phobos 149 years ago
earthsky.org · 6h · first report
On this date in 1877, astronomer Asaph Hall discovered a moon for Mars: Phobos, the larger of 2 moons. He discovered the other moon, Deimos, later that year. The post A moon for Mars! Asaph Hall finds Phobos 149 years ago first appeared on EarthSky .
The coverage
- On this day in space! Aug. 17, 1877: Asaph Hall Discovers the Martian moon Phobos
space.com · 1h
- Aug. 17, 1877: Asaph Hall discovers Phobos
astronomy.com · 2h
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