Closest approaches to the Saturnian rings by space probes https://mastodon.cloud/media/O5kU922KbUtV3ME5kCU - note how they find the gaps either side of the dense rings (A-F). Black = planet itself

The Harvard and MIT marches merging on the MIT campus https://mastodon.cloud/media/npn9dG_tDO7tTrNDUq4

Harvard humanists on Boston Common for the #marchforscience https://mastodon.cloud/media/L58atAfMslbT2Pdz9HU

Harvard and MIT scientists marching across the Charles River to Boston #marchforscience https://mastodon.cloud/media/LpqQEOQM2lx0tN_hvuk

Astronomers at Harvard heading out for the science march today https://mastodon.cloud/media/9OEyueycVNnw_P8v6JU

Orbital decay of stuff recently ejected from the space station. TES-5 has a drag device to make it reenter quickly. The ACBM shield was dropped by a spacewalking astronaut. https://mastodon.cloud/media/X7-glOrD8BAjunAdJfE

Another data drop: the average distance between Earth satellites versus altitude and latitude https://mastodon.cloud/media/DfUlo7x0MtON_wJCWr0

Another data drop: satellite mass distribution 1957-2009 and 2010-2017 showing the rise of the nanosats https://mastodon.cloud/media/zehN0EhHknF6I9HNV2o https://mastodon.cloud/media/eshnHEoaD0_U6-is7yo