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2 days ago · High in the Sun's atmosphere, the temperature increases, and UV and X- rays are emitted. Some of the radiation is thermal (broadband) and some is line (spectral) radiation. Solar images at different wavelengths depict different altitudes and processes.
9 hours ago · The Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
3 days ago · The Sun is what we call a broadband emitter: it gives off radiation over a very wide frequency range. The Learmonth solar radio telescopes monitor both the quiet and active Sun, at 245, 410, 610, 1415, 2695, 4995, 8800, and 15400 Mhz.
2 days ago · Liberal caucus staying quiet after major byelection defeat that rattled party. MP Terry Duguid stands during question period in the House of Commons on Parliament Hill in Ottawa on Tuesday, March ...
2 days ago · The quiet regions of the solar surface are densely populated with small and weak flux patches. They contain an amount of magnetic flux comparable to what is found in active regions during the peak of the solar cycle.
5 days ago · Solar Activity Forecast. Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (25 Jun, 26 Jun, 27 Jun). IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z. The geomagnetic field has been at quiet levels for the past 24 hours.
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2 days ago · The Fermi paradox is a conflict between the argument that scale and probability seem to favor intelligent life being common in the universe, and the total lack of evidence of intelligent life having ever arisen anywhere other than on Earth.
