What is Mars made of?

For thousands of years, human beings have stared up at the sky and wondered about the Red Planet. Easily seen from Earth with the naked eye, ancient astronomers have charted its course across the heavens with regularity. ...

Slight shifts in magnetic field preceded California earthquakes

Researchers studying intermediate to large earthquakes in California have discovered detectable changes in the local magnetic field that occur 2–3 days before an earthquake. In a study now published in Journal of Geophysical ...

Researchers study fluctuations in solar radiation

The Sun is the Earth's principal source of energy and climate driver. Yet sometimes it sends more light to the Earth than other times. Astronomers working with Natalie Krivova at the Max Planck Institute for Solar System ...

The space weather forecast for Proxima Centauri B

Proxima Centauri, the closest star to the Earth (only 4.28 light-years away) is getting a lot of attention these days. It hosts a planet, Proxima Cen b, whose mass is about 1.3 Earth-mass (though it could be larger, depending ...

The sun is a normal star after all, confirms study

With data from the Kepler (NASA), Gaia (ESA) and SOHO (NASA/ESA) satellites, a team, led by Instituto de Astrofísica e Ciências do Espaço (IA) researcher Ângela Santos, seems to have put an end to the idea that the sun ...

Magnetic fields may be the key to black hole activity

Collimated jets provide astronomers with some of the most powerful evidence that a supermassive black hole lurks in the heart of most galaxies. Some of these black holes appear to be active, gobbling up material from their ...

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