Tag Archives: Earth

Update on how Earth’s magnetic field is changing

The European Space Agency (ESA) has a trio of satellites known as SWARM that studies Earth’s magnetic field. “Launched in 2013, the trio of Swarm satellites are measuring and untangling the different magnetic fields that stem from Earth’s core, mantle, … Continue reading

Posted in geology, geophysics | Tagged , , ,

Moon stabilizes Earth

Image credit Earth’s moon is relatively large. This is unique for large planets in our solar system. Mercury and Venus have no moons, and Mars has only two small asteroid-sized objects (Phobos and Deimos) orbiting it. Uranus has 27 known … Continue reading

Posted in geophysics | Tagged ,

Recent changes in Earth’s magnetic field

Image credit According to geologic record in the minerals, Earth’s magnetic dipole polarity reversed many times during the planet’s 4.5 billion year history. The average time between reversals is 250 thousand years.  There were no reversals in the last 780 … Continue reading

Posted in energy, geology, geophysics, mind, physics, precession of Earth, precession of equinoxes | Tagged , , , ,

Difference between sidereal day and solar day on Earth

An Earth day can be measured in different ways. Measure the time it takes for a complete rotation of Earth around its axis. Measure the time it takes for the Sun to appear in the same meridian in the sky. … Continue reading

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Mars Curiosity

http://www.jpl.nasa.gov/msl/ I watched a documentary on NASA’s Curiosity rover with teary eyes. It may be surprising for non-scientists to hear that scientists can be so emotional over a technical and scientific matter! My tears were the tears of happiness because … Continue reading

Posted in mythology, science, society | Tagged , , , , ,

NYC Subway Musings

I take subways in New York City everyday. Depending on the time of the day and the specific line the subways can be very crowded. During rush hour it is not uncommon to be face to face with a total … Continue reading

Posted in spiritual philosophy | Tagged , , , , ,

Life on Earth critically depends on the magnetic field

Life on Earth critically depends on Earth’s magnetic field. We should know more about it and the dynamo that generates it. Compasses point to the magnetic north pole. Birds follow the magnetic field lines during their seasonal migrations. Earth’s magnetic … Continue reading

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