This episode of the Hubblecast celebrates 23 years of the NASA/ESA Hubble Space Telescope, with the unveiling of a beautiful and striking new Hubble image of the Horsehead Nebula. Our host Dr Joe Liske (aka Dr J) explains the secrets of nebulae, cosmic clouds of gas and dust that have been the subjects of some of Hubble’s most striking astronomical images. The Horsehead Nebula is one of the most distinctive, and is now shown in a whole new light thanks to a stunning new infrared image — revealing the delicate wisps of gas that are normally hidden by the thick dust that makes up the Horsehead’s famous and familiar shape. Credit: ESA/Hubble
Most stars in the Universe are small and insignificant, and they will — eventually — fizzle out without much drama. But a few light up the sky when they die, and in the process, they don’t just tell us about the lives of stars: they create the building blocks of life, and help us to unravel the whole history of the Universe. These are the stars that end their lives as supernovae, explosions that are among the most violent events in the Universe. Credit: ESA/Hubble
This episode of the Hubblecast explores how conceptual artist Tim Otto Roth has been inspired by scientific data from the NASA/ESA Hubble Space Telescope to create a unique work of art.
Hubblecast episode 62 explores nearby spiral galaxy Messier 106. At first glance it looks like a normal spiral, but look a little deeper, and it hides some intriguing secrets. Dr Joe Liske (aka Dr J) gives us a tour of this fascinating object.
In this episode of the Hubblecast, we do away with Hubble’s stunning pictures of the cosmos, and focus on one of the telescope’s most important — but least known — functions. Like a digital camera, Hubble’s cameras produce colour images by sampling just a handful of colours and combining them together into one picture. The detail is extraordinary — but while the colours are accurate enough for the human eye, they are not good enough for some kinds of scientific work, such as the study of distant galaxies and extrasolar planets. In this episode, presenter Joe Liske (aka Dr J) and Hubble astronomer Bob Fosbury give a introduction to spectroscopy using Hubble, how it works, and what it’s for. Translation guidelines: http://www.spacetelescope.org/videos/subtitles/
In this episode of the Hubblecast, Joe Liske (aka Dr J) shows how a team of astronomers has used Hubble and a battery of other telescopes to discover the secrets of massive galaxy cluster MACS J0717. They have found that an invisible filament of dark matter extends out of the cluster. This is our first direct glimpse of the shape of the scaffolding that gives the Universe its structure. More info: http://www.spacetelescope.org/videos/heic1215a/ Translation guidelines: http://www.spacetelescope.org/videos/subtitles/
In this episode of the Hubblecast, Joe Liske (aka Dr J) presents the winners of the Hidden Treasures image processing competition. In May 2012, we asked members of the public to delve into Hubble's vast science archive to uncover pictures that had never been seen outside of the scientific community — and then to try their hand at processing the scientific data into attractive images. This episode presents the top ten images from the several thousand submitted. http://www.spacetelescope.org/videos/hubblecast57a/
More info: http://www.spacetelescope.org/videos/subtitles/ In this episode of the Hubblecast, Dr J (aka Dr Joe Liske) presents the latest discovery about HD 189733b, an exoplanet that has been repeatedly studied by Hubble. Observations taken in 2011 using Hubble and the Swift satellite showed a flare from the planet’s parent star scorching the upper atmosphere and driving it off into space. This is the first time that clear change has been observed in an exoplanet’s atmosphere. The observations give a tantalising glimpse of changing weather on planets outside our Solar System.
What makes a scientific discovery really important? It's partly down to how much scientists use the discovery in subsequent work -- but it’s also partly down to what inspires their imagination. In this episode, the Hubblecast talks to some leading astronomers about their favourite Hubble discovery. Meanwhile, our presenter, Dr J, struggles to make up his mind. More information: http://www.spacetelescope.org/videos/hubblecast42a/
Hubble's history of scientific breakthroughs has made us think afresh about our Universe. But behind the astronomical successes is a rollercoaster ride of scientific and technical challenges going back decades. The Hubblecast caught up with some of the key players in Hubble's history, including an astronaut, a Nobel Prize winner and one of the scientists who diagnosed Hubble's blurred vision in 1990. In this episode, narrated by veteran ESA scientist Bob Fosbury, they tell Hubble’s story through their personal experiences.
In early 2009, a team of astronauts visited Hubble to repair the wear and tear of twenty years of operating in a hostile environment - and to install two new instruments, the Cosmic Origins Spectrograph, and Wide Field Camera 3 - better known as WFC3. More information: http://www.spacetelescope.org/videos/hubblecast40a/
For centuries, scientists imagined objects so heavy and dense that their gravity might be strong enough to pull anything in - including light. They would be, quite literally, a black hole in space. But it’s only in the past few decades that astronomers have conclusively proved their existence. Today, Hubble lets scientists measure the effects of black holes, make images of their surroundings and glean fascinating insights into the evolution of our cosmos.
The Hubblecast's Joe Liske (Dr J) takes us on a tour of the Tarantula Nebula. Bright star forming gas clouds, super star clusters and supernova remnants are just some of the sights in this dramatic region of the night sky.
The NASA/ESA Hubble Space Telescope is working on three of the most ambitious projects in its history just now. These multicycle treasury programs are using Hubble's unique ability to observe across the spectrum from ultraviolet, through visible, to infrared light, to build up a library of data which will serve astronomers for many years. In this podcast episode, presenter Dr J (aka Joe Liske) looks at these projects, and how they will complement the capabilities of the next great thing in space-based astronomy, the James Webb Space Telescope.
This joint episode of the Hubblecast and ESOcast presents Abell 2744, an unusual cluster of galaxies nicknamed "Pandora's Cluster" by the astronomers who have studied it. Looking at the galaxies, gas and dark matter in the cluster, scientists have reconstructed the series of huge collisions that created it, and have uncovered some strange phenomena never seen together before.
To celebrate the 22nd anniversary of the NASA/ESA Hubble Space Telescope this month, episode 54 of the Hubblecast gives a slideshow of some of the best images from over two decades in orbit, set to specially commissioned music. More information: http://www.spacetelescope.org/videos/heic1206a Translation guidelines: http://spacetelescope.org/videos/subtitles/
In this episode of the Hubblecast, Joe Liske, aka Dr J, takes us on a tour of the outer reaches of the Andromeda Galaxy, the closest spiral galaxy to our Milky Way. For more information on this episode: http://www.spacetelescope.org/videos/heic1112a/ For translation guidelines: http://www.spacetelescope.org/videos/subtitles/
Over two decades in orbit, the Hubble Space Telescope has made a huge number of observations. Every week, we publish new ones on the Hubble website. But hidden in Hubble’s huge data archives are some truly breathtaking images that have hardly ever been seen by anyone. In this episode, Dr J, aka Dr Joe Liske, explains what all this data is, what it’s for, and how you can take a look at it yourself. If you’re want to try your hand at looking through the archive for hidden treasures, why not enter our Hidden Treasures competition (competition closes 31 May 2012). Find a great dataset and you could win an iPod Touch, try your hand at processing the image and you could win an iPad.
In this episode of the Hubblecast, Joe Liske (aka Dr J) looks at newborn stars firing out jets of matter. These jets may cast new light on how the Sun formed 4.5 billion years ago. An international team of scientists led by astronomer Patrick Hartigan of Rice University in Houston, USA, has collected enough high-resolution Hubble images over a 14-year period to stitch together time-lapse movies of these jets. More info: http://www.spacetelescope.org/videos/heic1113a/