Etiqueta: astronomy

Leap Years
Why do we have leap years?

2020 will have an extra day, but what is the origin of this leap year? Amelia Ortiz-Gil, PhD in astrophysics and disseminator for the Astronomical Observatory of the University of Valencia, answers.

aurores boreals
Why do auroras occur?

Auroras originate in the Sun. The star continuously emits particles which, when solar activity is high, reach the Earth's atmosphere in the form of large bursts of solar wind.

Kessler syndrome

Kessler Syndrome refers to an avalanche-like phenomenon in which, from a critical density of objects, a collision with space junk produces more junk, which in turn causes more collisions.

superlluna
What is a supermoon?

According to the astrophysicist and communicator Javier Armentia, supermoons do not really exist. As he explains, the term is not astronomical, but vulgar astrology.

Kepler 62f
Exoplanets

Since the first worlds were found orbiting other stars in the 1990s, in barely two decades, more than three thousand extrasolar planets have been found.