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Arecibo Observatory will be demolished

      Arecibo’s days are done. After two support cables failed in recent months, the radio observatory’s 305-meter-wide dish is damaged beyond repair, the National Science Foundation announced on November 19. It will be decommissioned and dismantled.

     The telescope, famous for appearances in movies like GoldenEye and Contact, consists of a wide dish to collect radio waves from space and focus them into detectors housed in a dome suspended above the dish.

     In August, one of the cables that holds up the dome slipped out of a socket and punched a hole in the dish. Then a second cable unexpectedly broke on November 6. If a third cable were to break, it could send the platform holding up the dome swinging, or the whole structure could collapse. 

     The NSF determined that there was no safe way to repair the telescope. 

Adaptado de https://www.sciencenews.org/article/arecibo-telescope-observatory-icon-puerto-rico-science-demolished. 

NASA, US and European Partners Launch Mission to Monitor Global Ocean

    A joint U.S.-European satellite built to monitor global sea levels lifted off on a SpaceX Falcon 9 rocket from Space Launch Complex 4E at Vandenberg Air Force Base in California Saturday at 9:17 a.m. PST (12:17 p.m. EST).

    About the size of a small pickup truck, Sentinel-6 Michael Freilich will extend a nearly 30- year continuous dataset on sea level collected by an ongoing collaboration of U.S. and European satellites while enhancing weather forecasts and providing detailed information on large-scale ocean currents to support ship navigation near coastlines. 

    "The Earth is changing, and this satellite will help deepen our understanding of how," said Karen St. Germain, director of NASA's Earth Science Division. "The changing Earth processes are affecting sea level globally, but the impact on local communities varies widely. International collaboration is critical to both understanding these changes and informing coastal communities around the world." 

    After arriving in orbit, the spacecraft separated from the rocket's second stage and unfolded its twin sets of solar arrays. Ground controllers successfully acquired the satellite's signal, and initial telemetry reports showed the spacecraft in good health. Sentinel-6 Michael Freilich will now undergo a series of exhaustive checks and calibrations before it starts collecting science data in a few months' time.

Fonte: https://www.nasa.gov/press-release/nasa-us-and-european-partners-launch-mission-to-monitor-global-ocean>acesso 16 de dezembro de 2020.

CORONAVIRUS

Coronavirus is a newly discovered virus. It causes a disease called Covid-19. In some parts of the world, it has made lots ............ people sick. Corona is a Latin for crown, because ............. the microscope, these viruses look like a crown .............. spikes ending ............... little blobs.

A lot of symptoms are similar to the flu. You may have dry and itchy cough, fever, lots of sneezing and even hard to breathe. Most of people who has gotten sick with this coronavirus have had a mild case. It means you will not feel the disease. But, for people who are much older or who already have health problems are more likely to get sicker with coronavirus.

If anyone gets sick and feels like they may have coronavirus, they can immediately call their doctors and get help. If there is something we are not sure about the information, confused or worried about, don’t be afraid to ask someone we trust.

Here are some things you can do to protect yourself, family and friends from getting sick: 1) wash your hands often using soap and water. 2) Sneeze into your elbows. It is believed that coronavirus spread through little liquid from our lungs. If you sneeze into your elbows, you can prevent germs for going far into the air. 3) Avoid touching your face. Don’t pick your nose. Don’t touch your mouth. Don’t rub your eyes. They are the places where the virus enter our bodies. 

Remember that this kind of virus can affect anybody. It doesn’t matter where you come from or what country you are from. Don’t forget, there are a lot of helpers out there who are working to protect us from the virus. We can take a part by keeping our health and stay at home to stop the virus spread to others.