September 22, 2018 – Earl's Astro Site

Directly measuring the mass of an imaged planet

Extremely accurate measurements of the position of β Pictoris from the Hipparcos and Gaia satellites allow the direct measurement of the mass of the imaged planet β Pic b.

Source: astrobites.org/2018/09/21/directly_measureing_the_mass_of_beta_pic_b/

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September 22, 2018

Mars

Recent tectonics on Mars

Recent tectonics on Mars These prominent trenches were formed by faults that pulled the planet’s surface apart less than 10 million years ago. Source: m.esa.int/Our_Activities/Space_Science/Mars_Express/Recent_tectonics_on_Mars

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September 22, 2018