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NASA STEREO Spacecraft’s Lone Check out of Betelgeuse Reveals More Weird Conduct – Is Supernova Imminent?



NASA STEREO Spacecraft’s Lone View of Betelgeuse Reveals More Strange Behavior – Is Supernova Imminent?

An impression from the Heliospheric Imager aboard NASA’s STEREO spacecraft reveals the star Betelgeuse, circled. For quite a few weeks in 2020, STEREO was the only observatory producing measurements of Betelgeuse mainly because of the spacecraft’s one of a kind situation in area. Credit history: NASA/STEREO/Hi

For several months in summer months 2020, NASA’s Solar and Terrestrial Relations Observatory, or STEREO, had the photo voltaic system’s very best perspective of the star Betelgeuse, whose excessive dimming around the past many months has intrigued experts. STEREO’s measurements discovered much more sudden dimming by the star, further introducing to the issues all over Betelgeuse’s recent behavior.

Starting up in late spring 2020, Betelgeuse has appeared shut to the Solar in the sky since of Earth’s placement in space. Nonetheless, the STEREO spacecraft is at present about 70 degrees away from Earth — that means that in late June, STEREO was in approximately the exact position that Earth was in close to mid-April, and could for that reason see the stars that appeared in Earth’s evening sky for the duration of April.

Betelgeuse Brightness 2018 2020 Chart

This determine shows measurements of Betelgeuse’s brightness from unique observatories from late 2018 to current. The blue and inexperienced details depict knowledge from floor-based mostly observatories. The gaps in these measurements materialize when Betelgeuse seems in Earth’s working day sky, producing it difficult to get precise brightness measurements. For the duration of this observation gap in 2020, NASA’s STEREO spacecraft — with measurements shown in pink — stepped in to notice Betelgeuse from its exceptional vantage point, revealing unanticipated dimming by the star. The 2018 facts position from STEREO was uncovered in the mission’s archival details and was made use of to calibrate STEREO’s measurements towards other telescopes. Credit history: Dupree, et al

Experts took edge of this exclusive orbital position to preserve tabs on Betelgeuse while the star was invisible to Earth-certain observatories. Through this time period involving late June and early August, STEREO noticed Betelgeuse on 5 individual times, rolling the spacecraft for about two hrs every time to place Betelgeuse in the area of view of STEREO’s Heliospheric Imager, an instrument generally utilized to seize photographs of the Sun’s outflowing content, the photo voltaic wind, as it passes by the spacecraft and toward Earth. The staff shortened the instrument’s exposure time to account for Betelgeuse’s relative brightness in contrast to the photo voltaic wind. The instrument’s vast field of perspective covers about 70 degrees of sky, which allowed researchers to calibrate their measurements working with continuous stars in the night sky across several months.

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STEREO’s measurements revealed that Betelgeuse is dimming once again — an unforeseen advancement so before long soon after its last dim time period. Betelgeuse normally goes by way of brightness cycles long lasting about 420 times, with the former least in February 2020, that means this dimming is happening unexpectedly early. These observations were noted by the science group by way of The Astronomer’s Telegram on July 28, 2020. This is an intriguing phenomenon that scientists will examine with supplemental Earth-orbiting and ground-dependent observatories when Betelgeuse returns to the night sky in late August.

Betelgeuse Southern Region Evolving

This 4-panel graphic illustrates how the southern location of the rapidly evolving, vivid, crimson supergiant star Betelgeuse may have out of the blue turn into fainter for various months during late 2019 and early 2020. In the initially two panels, as found in ultraviolet mild with the Hubble House Telescope, a vibrant, incredibly hot blob of plasma is ejected from the emergence of a enormous convection cell on the star’s surface area. In panel a few, the outflowing, expelled gas rapidly expands outward. It cools to type an great cloud of obscuring dust grains. The remaining panel reveals the big dust cloud blocking the light-weight (as witnessed from Earth) from a quarter of the star’s surface. Illustration credit history: NASA, ESA, and E. Wheatley (STScI)

Is a Supernova Imminent?

The crimson supergiant is destined to close its lifestyle in a supernova blast. Some astronomers assume the sudden dimming could be a pre-supernova occasion. The star is fairly nearby, about 725 gentle-years absent, which means the dimming would have transpired all around the 12 months 1300. But its light is just achieving Earth now.

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“No one particular is aware what a star does suitable before it goes supernova, since it’s under no circumstances been observed,” Andrea Dupree, associate director of the Center for Astrophysics | Harvard & Smithsonian (CfA), Cambridge, Massachusetts, described. “Astronomers have sampled stars maybe a calendar year ahead of them likely supernova, but not within times or weeks ahead of it occurred. But the possibility of the star going supernova at any time shortly is quite little.”

Go through Hubble Finds Cause for Betelgeuse’s Mysterious Dimming for far more study on Betelgeuse’s recent dimming.

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Portuguese historical films will premiere on 29 December.



Portuguese historical films will premiere on 29 December.

Method Media Bermuda will present the documentary FABRIC: Portuguese History in Bermuda on Thursday, December 29 at the Underwater Research Institute of Bermuda.

A spokesperson said: “Method Media is proud to bring Bermuda Fabric: Portugal History to Bermuda for its 5th and 6th showing at the Bermuda Underwater Observatory. In November and December 2019, Cloth: A Portuguese Story in Bermuda had four sold-out screenings. Now that Bermuda has reopened after the pandemic, it’s time to bring the film back for at least two screenings.

“There are tickets For $ 20 – sessions at 15:30 and 18:00. Both screenings will be followed by a short Q&A session.

Director and producer Milton Raboso says, “FABRIC is a definitive account of the Portuguese community in Bermuda and its 151 years of history, but it also places Bermuda, Acors and Portugal in the world history and the events that have fueled those 151 years.

“It took more than 10 years to implement FABRIC. The film was supported by the Minister of Culture, the Government of the Azores and private donors.

Bermuda Media Method [MMB] Created in 2011 by producer Milton Raposo. MMB has created content for a wide range of clients: Bermuda’s new hospital renovation, reinsurance, travel campaigns, international sports and more. MMB pays special attention to artistic, cultural and historical content.

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Maestro de Braga is the first Portuguese in the National Symphony Orchestra of Cuba.



Maestro de Braga is the first Portuguese in the National Symphony Orchestra of Cuba.

Maestro Filipe Cunha, Artistic Director of the Philharmonic Orchestra of Braga, has been invited to conduct the Cuban National Symphony Orchestra, as announced today.

According to a statement sent by O MINHO, “he will be the first Portuguese conductor to conduct this orchestra in its entire history.”

In addition to this orchestra, the maestro will also work with the Lyceo Mozarteum de la Habana Symphony Orchestra.

The concerts will take place on 4 and 12 March 2023 at the National Theater of Cuba in Havana.

In the words of the maestro, quoted in the statement, “these will be very beautiful concerts with difficult but very complex pieces” and therefore he feels “very motivated”.

From the very beginning, Rachmaninoff’s Piano Concerto No. 2 will be performed by an Italian pianist (Luigi Borzillo), whom the maestro wants to bring to Portugal later this year. In the same concert, Mendelshon’s First Symphony will be performed.

Then, at the second concert, in the company of the Mexican clarinetist Angel Zedillo, he will perform the Louis Sfora Concerto No. 2. In this concert, the maestro also conducts Tchaikovsky’s Fifth Symphony.

“This is an international recognition of my work. An invitation that I accept with humility and great responsibility. I was surprised to learn that I would be the first Portuguese member of the Cuban National Symphony Orchestra. This is a very great honor,” the maestro said in a statement.

“I take with me the name of the city of Braga and Portugal with all the responsibility that goes with it, and I hope to do a good job there, leaving a good image and putting on great concerts. These will be very special concerts because, in addition to performing pieces that I love, especially Rachmaninov and Tchaikovsky, I will be directing two wonderful soloists who are also my friends. It will be very beautiful,” concludes Filipe Cunha.

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