Recently in the Space Weather Category


Space weather plays an important role in the evolution of planetary atmospheres. Observations have shown that stellar flares emit energy in a wide energy range (10^30-10^38 ergs), a fraction of which lies in X-rays and extreme ultraviolet (XUV).

A nearby star, the host of two (and possibly three) planets, was initially thought to be quiet and boring.

Magnetic activity of the Sun and other stars causes their brightness to vary. We investigate how typical the Sun's variability is compared to other solar-like stars, i.e. those with near-solar effective temperatures and rotation periods.

When our sun belches out a hot stream of charged particles in Earth's general direction, it doesn't just mess up communications satellites. It might also be scrambling the navigational sense of California gray whales (Eschrichtius robustus), causing them to strand on land, according to a Duke University graduate student.

Coronal Mass Ejections (CMEs) may have major importance for planetary and stellar evolution. Stellar CME parameters, such as mass and velocity, have yet not been determined statistically.

Scientists funded in part by the NASA Astrobiology program are providing new insights into how terrestrial planets are affected by coronal mass ejections (CMEs) early in the formation of a stellar system.

Superflares, as strong explosions on stars, have been well studied with the progress of space time-domain astronomy. In this work, we present the study of superflares on solar-type stars using Transiting Exoplanet Survey Satellite ({\em{TESS}}) data.

The late stellar evolutionary phases of low and intermediate-mass stars are strongly constrained by their mass-loss rates.

Energetic flares and associated coronal mass ejections (CMEs) from young magnetically active solar-like stars can play a critical role in setting conditions for atmospheric escape as well aspenetration of accelerated particles into their atmospheres that promotes formation of biologically relevant molecules.

The current progress in the detection of terrestrial type exoplanets has opened a new avenue in the characterization of exoplanetary atmospheres and in the search for biosignatures of life with the upcoming ground-based and space missions.