Editorial: Interplanetary medium variability as observed in the new era of spacecraft missions

Since 1970s an increasing number of heliospheric and planetary space missions have been launched as Helios (Porsche, 1981), Ulysses (Carvell, 1986), Wind (Acuña et al., 1995), ACE (Garrard et al., 1997), MAVEN (Jakosky and Maven Science Team, 2008), Rosetta (Wood, 1987), Cassini (Prange, 1985) collected a huge amount of data to characterize the interplanetary medium variability through the Heliosphere. Nowadays, the recently launched space missions BepiColombo (Benkhoff et al., 2021), Parker Solar Probe (Bale et al., 2016), and Solar Orbiter (Müller et al., 2020) provide more accurate in situ measurements through high-resolution instruments for monitoring the evolution of solar wind parameters at different heliocentric distances ranging from ∼0.05 A.U. to ∼10 A.U., and for providing new insights into the physics of various plasma processes related to the Sun and the interplanetary medium.