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The talk pagemay contain suggestions. (March 2018) The cataclysmic pole shift hypothesisis a pseudo-scientificclaim that there have been recent, geologically rapid shifts in the axis of rotationof Earth, causing calamities such as floods and tectonic events[1]or relatively rapid climate changes. There is evidence of precessionand changes in ...
Geomagnetic polarity during the last 5 million years (Pliocene and Quaternary, late Cenozoic Era). Dark areas denote periods where the polarity matches today's normal polarity; light areas denote periods where that polarity is reversed. A geomagnetic reversal is a change in a planet's dipole magnetic field such that the positions of magnetic ...
Artist's concept of the Earth 5–7.5 billion years from now, when the Sun has become a red giant. While the future cannot be predicted with certainty, present understanding in various scientific fields allows for the prediction of some far-future events, if only in the broadest outline. [1][2][3][4] These fields include astrophysics, which ...
One frequently cited date was December 21, 2012. This date had many apocalyptic associations, as it was the end of a cycle in the long count in the Maya calendar. Several writers published books connecting the encounter with 2012. [23] Despite that date having passed, many websites still contend that Nibiru/Planet X is en route to Earth.
The winter solstice occurs during the hemisphere's winter. In the Northern Hemisphere, this is the December solstice (December 21, December 22, or December 23) and in the Southern Hemisphere, this is the June solstice (June 20, June 21, or June 22). Although the winter solstice itself lasts only a moment, the term also refers to the day on ...
When Julius Caesar established the Julian calendar in 45 BC, he set 25 March as the date of the spring equinox; [17] this was already the starting day of the year in the Persian and Indian calendars. Because the Julian year is longer than the tropical year by about 11.3 minutes on average (or 1 day in 128 years), the calendar "drifted" with ...
On the Gregorian calendar, the northward equinox can occur as early as 19 March or as late as 21 March at 0° longitude. For a common year the computed time slippage is about 5 hours 49 minutes later than the previous year, and for a leap year about 18 hours 11 minutes earlier than the previous year. Balancing the increases of the common years ...
Year Northern hemisphere Southern hemisphere Date Season duration 2005 Winter solstice: Summer solstice 21 December 2005 18:35 88.99 days 2006 Spring equinox: Autumn equinox 20 March 2006 18:26 92.75 days 2006 Summer solstice Winter solstice 21 June 2006 12:26 93.65 days 2006 Autumn equinox Spring equinox 23 September 2006 4:03 89.85 days 2006