Venus has intrigued planetary scientists for decades because of its huge contrasts to Earth,
in spite of its nickname of “Earth's Twin”. Its invisible upper atmosphere and space …

This article summarizes and aims at comparing the main features of the induced
magnetospheres of Mars, Venus and Titan. All three objects form a well-defined induced …

Titan's ionosphere contains a rich positive ion population including organic molecules. Here,
using CAPS electron spectrometer data from sixteen Titan encounters, we reveal the …

The sunlit portion of planetary ionospheres is sustained by photoionization. This was first
confirmed using measurements and modelling at Earth, but recently the Mars Express …

We present results from the CAPS electron spectrometer obtained during the downstream
flyby of Titan on 26 December 2005, which occurred during a period of enhanced plasma …

Understanding what processes govern atmospheric escape and the loss of planetary water
is of paramount importance for understanding how life in the universe can exist. One …

Every planet or moon with an ionosphere is thought to generate a weak electrical potential
which helps ions overcome gravity and escape to space. A pilot study at Venus by Collinson …

This chapter focuses mainly on recent results obtained from observations on the Mars
Express (MEX) and Venus Express (VEX) spacecraft. Remote observations of cometary tails …

The suite of SECCHI optical imaging instruments on the STEREO‐A spacecraft is used to
track a solar storm, consisting of several coronal mass ejections (CMEs) and other coronal …

Photoelectrons are important for heating, ionization, and airglow production in planetary
atmospheres. Measured electron fluxes provide insight into the sources and sinks of energy …