ISS, passeios e lixo astronáutico

https%3A%2F%2Fphys.org%2Fnews%2F2018-02-recording-setting-spacewalk-antenna-wrong.html#pt0-400308

Citando:
"After removing the old, obsolete electronics box from the antenna—an original part, launched in 2000—Misurkin shoved it away from the space station. The bundle tumbled harmlessly away, 250 miles above the North Atlantic.

The 60-pound box—measuring just a couple of feet, or less than a meter—was hurled in a direction that will not intersect with the space station, according to NASA officials.

While the Russians routinely toss old equipment and used towels overboard during spacewalks, NASA prefers to secure no-longer-needed items or, if possible, bring them inside. Except for SpaceX's cargo ships, empty supply capsules are filled with trash and set loose to burn up in the atmosphere. The discarded electronics box will re-enter and burn up, too; Mission Control said it did not know when that will occur."

Dinossauros no Egipto (Cretáceo)

http://nationalpost.com/news/world/egyptian-scientists-have-discovered-the-holy-grail-of-dinosaurs-in-africa

Como a África foi feita

Mas não essa África:
https://www.theguardian.com/culture/2018/jan/30/toto-how-we-made-africa

Maior onda de sempre?

Maior onda de sempre? Nazaré:
https%3A%2F%2Fwww.wavelengthmag.com%2Fnazare-big-gets%2F#pt0-518266

Redes neuronais e UC?

https://www.comunidadeculturaearte.com/investigadores-da-universidade-de-coimbra-criam-algoritmo-para-a-evolucao-das-redes-neuronais-profundas/

Citando:
"Para se perceber melhor a diferença, os cientistas recorrem a uma analogia. «O que a maioria faz é afinar um Bugatti Veyron, um automóvel que, como sabemos, já é bastante rápido, de forma a conseguir boas performances; o que nós fazemos é dar ao algoritmo um conjunto de peças (jantes, pneus, peças para o motor, travões, etc.) e deixar que o algoritmo entenda o contexto da situação, isto é, descubra como combinar aquelas peças de forma a construir um veículo que obtenha uma performance competitiva. Mas nem sequer o informamos que tem de ser um carro», ilustram."

2018-01: Exames de ADN em múmias com 4000 anos

https://tecake.in/dna-analysis-egyptian-brother-mummies-reveals-different-fathers/amp

Fundo do mar afunda?

https://www.express.co.uk/news/science/902001/Ocean-floors-shrinking-under-weight-melting-glaciers-Geophysical-Research-letters-Delft

Citando:
"The report states: “Over 1993-2014, the resulting globally averaged geocentric sea level change is eight per cent smaller than the barystatic contribution. Over the altimetry domain, the difference is about five per cent, and due to this effect, barystatic sea level rise will be underestimated by more than 0.1mm/yr over 1993-2014.”

According to the research, previous estimates of sea level rising in the Arctic Ocean have been inaccurate by a millimetre each year. 

The discrepancy happened because there is such a huge difference between geocentric sea level and barystatic sea levels. 

Geocentric sea levels are sea level as measured from the centre of the Earth and barystatic sea level is the mass of water in the sea. "