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Sailing across the Local Universe with ULLYSES

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Sailing across the Local Universe with ULLYSES: A Hubble Program to Observe Ultraviolet Light from Young Stars
Will Fischer, Space Telescope Science Institute

We’ve all heard that a picture is worth a thousand words. Astronomers go further and say that a spectrum is worth a thousand pictures. Spectra show how bright a target is over a range of colors, revealing the temperature, composition, and other properties of planets, stars, galaxies, dust, and gas. With the help of astronomy researchers around the world, the Space Telescope Science Institute is carrying out a major program called ULLYSES that is obtaining spectra of young stars in our galaxy and beyond using the Hubble Space Telescope. It focuses on ultraviolet spectroscopy, one of Hubble’s unique strengths. Join us to learn about stellar spectroscopy and our ongoing epic journey with ULLYSES.

Host: Frank Summers, Space Telescope Science Institute
Recorded live on Tuesday, September 1, 2020
More information: www.stsci.edu/public-lectures

Armchair Astrophysics: Finding Physics Far and Wide

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Quyen Hart, Space Telescope Science Institute

What do echoes, bubbles, and fireworks have to do with astrophysics? What do highway traffic jams and galaxy spiral arms have in common? Some of your everyday experiences can be explained using some basic physics concepts, and some of our cosmic observations have analogues in what we see around us. The laws of physics are universal, so astronomers apply our understanding of physics here on Earth to everything in the universe. Join us to explore the physics of familiar phenomena and to learn where the same physics is working ‘out there’ in the cosmos. Armchairs are not required, but highly recommended.

Host: Frank Summers, Space Telescope Science Institute
Recorded live on Tuesday, August 4, 2020
More information: www.stsci.edu/public-lectures

‘Oumuamua: A Mysterious Interstellar Interloper

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Amaya Moro-Martin, Space Telescope Science Institute

During the formation of our solar system, a tremendous number of asteroids, comets, and planetesimals were ejected into interstellar space by gravitational encounters. If extrasolar planetary systems, which are now known to be quite common, experienced a similar development, then our galaxy should be teeming with these expelled objects. Astronomers were perplexed that none had been found passing through our solar system.

Then, in 2017, the discovery of ‘Oumuamua transformed the situation from puzzlement to bewilderment. Observations with a wide range of telescopes followed the brightness and trajectory of this first interstellar interloper but left important questions about its origin and composition unanswered. Further, what process was responsible for the non-gravitational acceleration found in its unbound orbit?

This cosmic visitor will not return to provide explanations. Thus, the intriguing inquiries ‘Oumuamua left behind will remain as we seek out and study other guests from beyond our solar system.

Host: Frank Summers, Space Telescope Science Institute
Recorded live on Tuesday, July 7, 2020
More information: www.stsci.edu/public-lectures

What Happens If You Fill Up Car with Laundry Detergent? Does it Really Clean the Engine?

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Will pouring tide laundry detergent actually improve your vehicle performance? I put the myth to the test!

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Rubin’s Galaxy: A Gentle Giant Spiral Galaxy

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Benne Holwerda, University of Louisville

In the 1980s, astronomer Vera Rubin discovered that the spiral galaxy UGC 2885 is the most extended disk galaxy in the local universe. In addition, this galaxy is close enough for high-resolution Hubble studies. As such, this galaxy provides an intriguing test of the observed scaling relationships between the characteristics of a galaxy and the characteristics of its globular star cluster population. As part of Hubble’s 30th anniversary commemoration, a new, 74-megapixel, mosaic image of the newly nicknamed “Rubin’s Galaxy” was released in January 2020. Dr. Holwerda will describe the observation and analysis, with first results on the globular cluster population of this massive disk galaxy.

Host: Frank Summers, Space Telescope Science Institute
Recorded live on Wednesday, June 3, 2020
More information: www.stsci.edu/public-lectures

Cosmic Reef: NGC 2014 & NGC 2020 [Ultra HD]

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This science visualization presents the dramatic landscape of two nebulas in the Large Magellanic Cloud. The video, based on images by NASA’s Hubble Space Telescope, takes viewers on a close-up tour of the nebulas’ three-dimensional structures, as envisioned by scientists and artists.

The movie begins with the Hubble view of NGC 2014 (lower left) and NGC 2020 (upper right). The region has been nicknamed the “Cosmic Reef,” because of its resemblance to an undersea world. The camera then flies past myriad stars for a close-up look at NGC 2014. The first stop is the bubble of hot gas on the left that has a coral-like appearance. Energetic ultraviolet light from the system’s most massive stars has heated the gas, while strong stellar winds (streams of charged particles) help create its bubble structure.

The journey continues into the heart of the nebula, home to extraordinarily massive and bright stars. The glowing gas in this region is bathed in the stars’ intense luminosity. In contrast, the dark, denser gas is resisting that radiation, and is blown back to form craggy, mountainous shapes. The virtual flight moves past ridges, valleys, and pockets of new star formation.

The camera then rises up and over a ridge of NGC 2014, revealing the three-dimensional structure of neighboring NGC 2020. The Wolf-Rayet star at its core is the mammoth, intensely hot source of this nebula. Episodes of outbursts from the young star have produced cloudy rings and clumps in the bright blue gas. While Hubble views NGC 2020 looking down the axis of the stellar outflows, the visualization finishes with a side view that illustrates the nebula’s double-lobed structure.

Credit: NASA, ESA, G. Bacon, J. DePasquale, L. Hustak, J. Olmstead, A. Pagan, D. Player, and F. Summers (STScI)
Music: “Cosmic Reef” by J. DePasquale (STScI) CC BY 4.0

Dropping an iPhone 11 Pro Down Deep Hot Cauldron Hole – What’s in There?

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Thanks to LastPass for sponsoring a portion of this video!
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I dropped an iPhone 11 Pro down a super deep hot cauldron hole known as “Diana’s Punchbowl” aka Devil’s Cauldron to see what’s inside the steaming hot water and whether the iPhone would survive! I noticed the audio from the drop test was pretty eerie. Sounded like screaming voices to me.

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