I tested one of the cheapest Roborock robovacs and it still offers excellent vacuuming
The Q5 Pro+ delivers strong suction and great mapping, but the mop function is underwhelming to say the least.
Science Daily1d
Detailed map of dust in the Milky Way
Astronomers have constructed the first detailed 3D map of the properties of cosmic dust in our home galaxy. For their map, the astronomers used 130 million spectra from ESA's Gaia mission, results ...