ESA's billion-star surveyor, Gaia, completed its first year of science observations in its main survey mode.
Significant reduction of rainfall in Europe in the summer of 2015 led to atmospheric and soil drought, a phenomenon that has increased in July-August and decreased the Danube flow below the annual average (2400 m3/s compared to 4300 m3/s).
Low water levels in the Danube river have left ships to queue close to the town of Zimnicea in Romania.
The present heat wave torturing Europe means the level of the Danube has dropped and triggered traffic problems.
NASA's Kepler mission has achieved another success in the challenge to find another “Earth” by confirming the discovery of the first near-Earth-size planet in the “habitable zone” around a sun-like star: Kepler-452, a system located 1400 light-years away in the constellation Cygnus.