Space.com · Space · 2026-08-17
On this day in space! Aug. 17, 1877: Asaph Hall Discovers the Martian moon Phobos
On this day in space, Aug. 17, 1877: American astronomer Asaph Hall discovered Mars's moon Phobos. On Aug. 17, 1877, American astronomer Asaph Hall discovered Mars On this day in space! Aug. 17, 1877: Asaph Hall Discovers the Martian moon Phobos
Read original on Space.com Get the app
Licensed summary · LicensedSummary
Related briefs
- NASA Challenge Tests Wheel Designs for Moon Base Mobility
- Hubble Solves Merger Mystery From Milky Way’s Early Years
- Scientists find 3 supermassive black holes on the verge of collision inside a distant galaxy
- These eight Lego Star Wars Smart Play sets are out now and Marvel needs to be next.
- Wildfire smoke blankets volcanoes across the Pacific Northwest | Space photo of the day for Aug. 17, 2026