The presence of ionized gas around galaxies with moves with them leaves a trace in the microwave background radiation (left panel) which can be detected knowing the pattern of velocities of the galaxies provided by the map of fluctuations in their redshift (right panel). Credit: Carlos Hernández-Monteagudo (IAC) Scientists estimate […]

Artist’s impression of the surface of Gliese 486b. Credit: RenderArea   ANIMATION During the past 25 years astronomers have discovered a wide variety of exoplanets, made of rock, ice, and gas, thanks to the construction of astronomical instruments designed specifically for planet searches. Also, using a combination of different observing techniques […]