19.9.15
Conhece todos os miradouros em Lisboa?... Panteão Nacional
At the top of the National Pantheon, right by the huge dome, you may look out to the river, 25 de Abril Bridge, the Alfama district, and the towers of St. Vincent Monastery right across from you.
No topo do Panteão Nacional, junto à sua grande cúpula, pode-se ficar a observar o Tejo, o bairro de Alfama, a Ponte 25 de Abril, e as torres do Mosteiro de São Vicente de Fora mesmo em frente.
Astronomy picture of the day - 2015 September 19 - A Prominence on the Sun
Image Credit & Copyright: Alan Friedman (Averted Imagination)
Explanation: This eerie landscape of incandescent plasma suspended in looping and twisted magnetic fields stretched toward the Sun's eastern horizon on September 16. Captured through a backyard telescope and narrowband filter in light from ionized hydrogen, the scene reveals a gigantic prominence lofted above the solar limb. Some 600,000 kilometers across, the magnetized plasma wall would dwarf worlds of the Solar System. Ruling gas giant Jupiter can only boast a diameter of 143,000 kilometers or so, while planet Earth's diameter is less than 13,000 kilometers. Known as a hedgerow prominence for its appearance, the enormous structure is far from stable though, and such large solar prominences often erupt.
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