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HH 901: Pillars in the Carina Nebula [Ultra HD]

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Herbig Haro 901 is an immense pillar of gas and dust inside the Carina Nebula, a huge star-forming region in our galaxy. The pillar is several light-years tall and contains a few massive young stars. They shoot out powerful jets that emerge from the cloud. In some cases, the jets create bow-shock patterns similar to the effects of a ship plowing through the ocean. In the visible-light view, very few stars can be seen because the gas and dust block starlight. But in the infrared view, stars become visible and numerous. The visible-light colors emerge from the glow of different gases: oxygen (blue), hydrogen/nitrogen (green), and sulfur (red). The Carina Nebula is approximately 7,500 light years from Earth.

Video: NASA, ESA, and G. Bacon (STScI)
Image Credit: NASA, ESA, and the Hubble 20th Anniversary Team (STScI)

The Plumes of Europa: Ice, Water, Life?

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The Plumes of Europa: Ice, Water, Life?
Susana Deustua, Space Telescope Science Institute

Europa is one of the four moons of Jupiter discovered by Galileo in 1610. Four hundred years later, the Voyager and Galileo space probes took stunning images of Europa, revealing an icy surface crisscrossed by linear fractures. Four years ago, astronomers using the Hubble Space Telescope found evidence for plumes of water emerging from Europa’s icy surface. Ultraviolet spectroscopy detected emission indicative of water, and ultraviolet imaging of Europa as it transits Jupiter showed absorption patches suggestive of plumes. If there is liquid water on Europa, will future missions to Europa find evidence of life?

Host: Dr. Frank Summers

Recorded live on Tuesday, April 3 at the Space Telescope Science Institute in Baltimore, Maryland, U.S.A.

For more information: http://hubble.stsci.edu/about_us/public_talks/

Tonight’s Sky: April 2018

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The April night sky is full of celestial wonders: with Venus in the early evening, the double-star Mizar and Alcor at night, and Saturn, Mars, and Jupiter in the morning—topped off with the Lyrid meteor shower on April 22.

Find out more about what you can see from your backyard, local park, or rooftop deck by viewing our monthly program Tonight’s Sky: http://hubblesite.org/videos/science

Mapping the United Federation of Planets: An Astronomer’s Guide to the Galaxy

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Mapping the United Federation of Planets: An Astronomer’s Guide to the Galaxy
Mia Bovill, Space Telescope Science Institute

How big is Star Trek’s United Federation of Planets? How far did the various starship captains travel? Where exactly are the Klingons? To answer these questions, we need to leave the future spacefaring of the Enterprise behind and ask questions of astronomers in the here and now of 21st century Earth. Where is the Earth located within our Milky Way? What are the overall shape and scale of the galaxy? And just how can we decipher the Milky Way’s features when we are stuck at one location inside it? Come for the Star Trek, and stay to hear the centuries long, ongoing, and arduous tale of how a “minor bipedal species” is mapping the Milky Way.

Host: Dr. Frank Summers

Recorded live on Tuesday, March 6, 2018 at the Space Telescope Science Institute in Baltimore, MD, USA

For more information: http://hubblesite.org/about_us/public-talks.shtml

Tonight’s Sky: March 2018

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In March, Cancer the crab, the twins of Gemini, and a string of planets—Saturn, Mars, and Jupiter—are all visible from the Northern Hemisphere.

“Tonight’s Sky” is produced by HubbleSite.org, online home of the Hubble Space Telescope. This is a recurring show, and you can find more episodes–and other astronomy videos–at http://hubblesite.org/videos/science