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This article is a list of notable unsolved problems in astronomy. Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results. Experimental problems result from inability to test or investigate a proposed theory.
A garden solar lamp A child in Zambia studying by the light of a lamp charged by solar power during the day. A solar lamp, also known as a solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter.
This "Schramm plot" [2] depicts primordial abundances of 4 He, D, 3 He, and 7 Li as a function of cosmic baryon content from standard BBN predictions. CMB predictions of 7 Li (narrow vertical bands, at 95% CL ) and the BBN D + 4 He concordance range (wider vertical bands, at 95% CL) should overlap with the observed light element abundances ...
It was founded and published at the Max Planck Institute for Solar System Research from 2004 to 2015. After it was sold by the Max Planck Society in June 2015, it is now published by the academic publisher Springer Science+Business Media. The articles in Living Reviews provide critical reviews of the current state of research in the fields they ...
Sandra Lach Arlinghaus is an American Geographer who is adjunct professor in the School for Environment and Sustainability ...
In 2011 Anya Schoolman founded the national organization that would become Solar United Neighbors. [5] In 2018, SUN partnered with the American Solar Energy Society (ASES) in support of the US National Solar Tour, a tour of operational solar systems. [7] By March 2021, the effort had installed solar panels for 5,200 homes in the United States. [8]