We discuss the early history of quasiperiodic ~27-day recurrent geomagnetic activity and the corotating interaction region/CIR. Latter, the term stream interaction region/SIR was introduced to describe physically the same event (CIR). It is suggested to identify specific interplanetary phenomena, such as interplanetary coronal mass ejections, CIRs, high-speed streams and slow streams, all of which have different solar and interplanetary origins and different plasma and magnetic field properties.

The Submillimetre Wave Instrument (SWI) onboard the Jupiter Icy Moons Explorer (Juice) spacecraft consists of a 29 cm antenna and two radio receivers operating at submillimeter wavelength. This instrument is designed to study Jupiter's atmosphere and the thin atmospheres of its moons.

We used Earth observations  obtained during the Lunar-Earth-Gravity-Assist (LEGA) . This data analysis allows us to characterise the antenna beam and pointing corrections.

When the JUICE spacecraft swung past the Moon and Earth in August 2024, a network of radio telescopes tracked its signal with extraordinary precision. By measuring shifts in the spacecraft's radio frequency, scientists could reconstruct its exact trajectory, probe the ionosphere, and monitor space weather. This study demonstrates that ground-based radio astronomy infrastructure can play a powerful role in supporting deep-space exploration, laying the groundwork for JUICE's arrival at Jupiter.