We perform a study of stellar flares for the 24,809 stars observed with 2 minute cadence
during the first two months of the TESS mission. Flares may erode exoplanets' atmospheres …

The search for life in the Universe is a fundamental problem of astrobiology and modern
science. The current progress in the detection of terrestrial-type exoplanets has opened a …

High-resolution UV spectra of stellar H i Lyα lines from the Hubble Space Telescope (HST)
provide observational constraints on the winds of coronal main-sequence stars, thanks to an …

Understanding the impact of active M dwarf stars on the atmospheric equilibrium and
surface conditions of a habitable zone Earth-like planet is key to assessing M dwarf planet …

Recently, many Earth-sized planets have been discovered around stars other than the Sun
that might possess appropriate conditions for life. The development of theoretical methods …

Low-mass stars show evidence of vigorous magnetic activity in the form of large flares and
coronal mass ejections. Such space weather events may have important ramifications for the …

Magnetic storms on stars manifest as remarkable, randomly occurring changes of the
luminosity over durations that are tiny in comparison to the normal evolution of stars. These …

Proxima b is a terrestrial-mass planet in the habitable zone of Proxima Centauri. Proxima
Centauri's high stellar activity, however, casts doubt on the habitability of Proxima b …

Recent work has demonstrated that high levels of X-ray and UV activity on young M dwarfs
may drive rapid atmospheric escape on temperate, terrestrial planets orbiting within the …

Coherent radio bursts detected from M dwarfs have some analogy with solar radio bursts but
reach orders of magnitude higher luminosities. These events trace particle acceleration …