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Cassini Probe Will Dive Through Enceladus's Water Jets (nasa.gov)
An anonymous reader writes: NASA's Cassini probe has a daring mission tomorrow: dive through the water jets spraying from the south pole of Saturn's moon Enceladus. The probe will be a mere 30 miles above the surface, traveling at a relative speed of 19,000 mph. Researchers hope to gain insight into the chemical composition of the jets. "[T]he plumes are more than just gas and water: samples show that they also contain many of the building blocks essential to Earth-like life. This lends itself to the exciting possibility that organisms similar to those that thrive in our own deep oceans near volcanic vents exuding carbon dioxide and hydrogen sulfide might exist on Eceladus." The molecules suspended among the water may tell us whether Enceladus's oceans are capable of harboring life. "The spacecraft's sensors will pick up gases in the plume searching for the presence of molecular hydrogen (H2). The amount of H2 found could reveal how much hydrothermal activity is occurring in the ocean."
This is great. They're incurring a degree of risk to investigate Enceladus.
My dream is that one day they'll risk Cassini to get a better look at this.
At "pharmacist drop" of 20 drops per milliliter its mass is 50mg
19000mph is 8493.76m/s
The kinetic energy is 1803J.
Energy of a typical NATO rifle round, 5.56x45 mm is 1796J