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The detailed images recorded by SDO in 2011–2012 have helped scientists uncover new secrets about the Sun. The Solar Dynamics Observatory (SDO) is a NASA mission which has been observing the Sun since 2010. [4]
The Global Oscillation Network Group (GONG) is a worldwide network of six identical telescopes, designed to have 24/7 observations of the Sun. [1] The network serves multiple purposes, including the provision of operation data for use in space weather prediction, [2] and the study of solar internal structure and dynamics using helioseismology.
On 21 March 2013, the European-led research team behind the Planck cosmology probe released the mission's all-sky map (565x318 jpeg, 3600x1800 jpeg) of the cosmic microwave background. [46] [47] The map suggests the universe is slightly older than researchers expected.
Right: a few minutes later the Sun is on the local meridian again. A solar day is complete. Solar time is measured by the apparent diurnal motion of the Sun. Local noon in apparent solar time is the moment when the Sun is exactly due south or north (depending on the observer's latitude and the season). A mean solar day (what we normally measure ...
The frequency drifts from higher to lower values because it depends on the electron density, and the shock propagates outward away from the Sun through lower and lower densities. By using a model for the Sun's atmospheric density, the frequency drift rate can then be used to estimate the speed of the shock wave.
Actually, the angular velocity is not uniform, as can be seen at the surface, where the equator rotates faster than the poles. [46] The Sun rotates slowly enough that a spherical, non-rotating model is close enough to reality for deriving the rotational kernels. Helioseismology has shown that the Sun has a rotation profile with several features ...
In Real Life: Blocking The Sun. Meg Hilling. October 8, 2023 at 8:00 PM ... SEE MORE: In Real Life: Voices of Nature. ... USA TODAY. Burt, the crocodile from 'Crocodile Dundee,' dies in reptile ...
The total amount of energy received at ground level from the Sun at the zenith depends on the distance to the Sun and thus on the time of year. It is about 3.3% higher than average in January and 3.3% lower in July (see below).