Topic: Ultraviolet Light

NASA’s Hubble Space Telescope discovers supergiant star Betelgeuse’s Dimming is Due to Outburst

August 16, 2020 |

Greenbelt, MD – Observations by NASA’s Hubble Space Telescope are showing that the unexpected dimming of the supergiant star Betelgeuse was most likely caused by an immense amount of hot material ejected into space, forming a dust cloud that blocked starlight coming from Betelgeuse’s surface.

Hubble researchers suggest that the dust cloud formed when superhot plasma unleashed from an upwelling of a large convection cell on the star’s surface passed through the hot atmosphere to the colder outer layers, where it cooled and formed dust grains. The resulting dust cloud blocked light from about a quarter of the star’s surface, beginning in late 2019. By April 2020, the star returned to normal brightness.

This four-panel graphic illustrates how the southern region of the rapidly evolving, bright, red supergiant star Betelgeuse may have suddenly become fainter for several months during late 2019 and early 2020. In the first two panels, as seen in ultraviolet light with the Hubble Space Telescope, a bright, hot blob of plasma is ejected from the emergence of a huge convection cell on the star’s surface. In panel three, the outflowing, expelled gas rapidly expands outward. It cools to form an enormous cloud of obscuring dust grains. The final panel reveals the huge dust cloud blocking the light (as seen from Earth) from a quarter of the star’s surface. (NASA, ESA, and E. Wheatley (STScI))

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NASA’s MAVEN spacecraft captures images of Martian Night Sky Pulsing in Ultraviolet Light

August 9, 2020 |

Greenbelt, MD – Vast areas of the Martian night sky pulse in ultraviolet light, according to images from NASA’s MAVEN spacecraft. The results are being used to illuminate complex circulation patterns in the Martian atmosphere.

The MAVEN team was surprised to find that the atmosphere pulsed exactly three times per night, and only during Mars’ spring and fall. The new data also revealed unexpected waves and spirals over the winter poles, while also confirming the Mars Express spacecraft results that this nightglow was brightest over the winter polar regions.

This is an image of the ultraviolet “nightglow” in the Martian atmosphere. Green and white false colors represent the intensity of ultraviolet light, with white being the brightest. The nightglow was measured at about 70 kilometers (approximately 40 miles) altitude by the Imaging UltraViolet Spectrograph instrument on NASA’s MAVEN spacecraft. (NASA/MAVEN/Goddard Space Flight Center/CU/LASP)

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NASA Solar Observatory, ESA find New Comet

May 14, 2020 |

Greenbelt, MD – In late May and early June, Earthlings may be able to glimpse Comet SWAN. The comet is currently faintly visible to the unaided eye in the Southern Hemisphere just before sunrise — providing skywatchers with a relatively rare glimpse of a comet bright enough to be seen without a telescope.

But Comet SWAN’s initial discovery was made not from the ground, but via an instrument on board ESA (the European Space Agency) and NASA’s Solar and Heliospheric Observatory, or SOHO, satellite.

Location of Comet shown on graphic. (ESA/NASA/SOHO)

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New Personal Active UVC Air Sterilizer Will Combat COVID-19

April 30, 2020 |

Algonquin, IL – With the COVID-19 Coronavirus pandemic plaguing the United States and people around the world, Cair Products (www.cairproducts.com) announces the development of its new Personal Active UVC Air Sterilizer is in its final stages of testing and certification. The product will be available within 45 days of the release with a “patent pending” status.

With this unit, a patent-pending active sterilization system focuses on the individual user and sterilizing the air the user breathes and exhales.

Coronavirus

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Schools Will Reopen, Viruses Will Persist, Can We Protect Our Community?

April 12, 2020 |

San Francisco, CA – RobotLAB Inc., the leading Educational Robotics Company, announced today the launch of a suite of Virus-Fighting robots to keep schools safe and virus-free. The suite of robots, carefully chosen from all around the world, are designed to follow the UNICEF’s guidelines for safe and virus-free schools.

With Dr. Fauci’s expectation that the Coronavirus (COVID-19) will become a cyclical disease, it is more important than ever to ensure that schools, and our kids are safe, and not spreading infections throughout the community.

Fever Checking Robot

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Coronavirus Pandemic to cause Surge in Mobile Robotics for Disinfection, Monitoring, Surveillance, Delivery

April 5, 2020 |

Oyster Bay, NY – The Coronavirus (COVID-19) outbreak has highlighted use cases for mobile robotics to successfully disinfect, monitor, surveille, and handle and deliver materials. These proven use cases will propel the overall mobile robotics market to U.S. $23 billion by 2021, states global tech market advisory firm, ABI Research.

ABI Research whitepaper identifies the short-and long-term impacts the global pandemic will have on Industrial, Collaborative, and Commercial Robotics

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NASA says Stars Pollute, but Galaxies Recycle

October 29, 2019 |

Greenbelt, MD – NASA says that galaxies were once thought of as lonely islands in the universe: clumps of matter floating through otherwise empty space. We now know they are surrounded by a much larger, yet nearly invisible cloud of dust and gas.

Astronomers call it the circumgalactic medium, or CGM. The CGM acts as a giant recycling plant, absorbing matter ejected by the galaxy and later pushing it right back in.

The Triangulum galaxy, also known as Messier 33 or M33, as imaged by the Hubble Space Telescope. (NASA, ESA, and M. Durbin, J. Dalcanton, and B. F. Williams (University of Washington))

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NASA picks Study Proposals for understanding Fundamental Nature of Space

August 18, 2019 |

Washington, D.C. Two Proposals have been picked by NASA for concept studies that could help us better understand the fundamental nature of space and how it changes in response to planetary atmospheres, radiation from the Sun, and interstellar particles. The proposals will advance NASA’s heliophysics program and could lead to better protection for both technology and humans as we travel farther from home.

Each of these Heliophysics Science Mission of Opportunity proposals will receive $400,000 to conduct a nine-month mission concept study.

NASA has chosen two new science proposals for nine-month concept studies to advance our understanding of how the particles and energy in space – shown here flowing from the Sun in an illustration of the solar wind – affect the fundamental nature of space. One proposal will ultimately be chosen to launch along with NASA’s upcoming Interstellar Mapping and Acceleration Probe in October 2024. (NASA)

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NASA’s Hubble Space Telescope captures celestial Fireworks

July 6, 2019 |

Greenbelt, MD – NASA asks you to imagine slow-motion fireworks that started exploding 170 years ago and are still continuing. This type of firework is not launched into Earth’s atmosphere, but rather into space by a doomed super-massive star, called Eta Carinae, the largest member of a double-star system.

A new view from NASA’s Hubble Space Telescope, which includes ultraviolet light, shows the star’s hot, expanding gases glowing in red, white and blue. Eta Carinae resides 7,500 light-years away.

This Hubble Space Telescope image of the giant, petulant star Eta Carinae is yielding new surprises. Telescopes such as Hubble have monitored the super-massive star for more than two decades. The star, the largest member of a double-star system, has been prone to violent outbursts, including an episode in the 1840s during which ejected material formed the bipolar bubbles seen here. (NASA, ESA, N. Smith (University of Arizona) and J. Morse (BoldlyGo Institute))

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In effort to authenticate Legros discovery, APSU student finds connections

March 20, 2019 |

Austin Peay State University (APSU) 

Clarksville, TN – Earlier this semester, Austin Peay junior Katherine Tolleson discovered two drypoint creations by famed artist Alphonse Legros in the University’s Permanent Collection.

Tolleson and APSU gallery director Michael Dickins started investigating clues on the drypoint’s paper, such as watermarks, signatures, titles and impression numbers. Legros’ signature was clear. And on one of the prints, titled “The Sailor,” Legros writes the image is one of only 10 imprints.

Austin Peay State University junior Katherine Tolleson holds “Head of an Old Man,” left, and “The Sailor.” (APSU)

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