Hubblecast 90: The final frontier

Since October 2013 the NASA/ESA Hubble Space Telescope has been observing some of the most massive structures in the Universe -- galaxy clusters. Using the magnification effect caused by their mass, Hubble can look deeper into the Universe than ever before. In this new Hubblecast, Dr J talks about the goals and the achievements of this campaign, called the Frontier Fields programme.

More information and download options

All Hubblecasts

Hubblecast 88: Mysterious Ripples Found Racing Through Planet-forming Disc
Hubblecast 87: The many mysteries of Pluto
Hubblecast 86: The wings of the Twin Jet Nebula
Hubblecast 85: Ode to Hubble
Hubblecast 84: A starry snapshot for Hubble’s 25th
Hubblecast 83: A cosmic double act — Hubble meets James Webb
Hubblecast 82: New view of the Pillars of Creation
Hubblecast 81: Ode to Hubble
Hubblecast 80: The riddle of the missing stars
Hubblecast 79: Q&A with Dr J part 2
Hubblecast 78: Q&A with Dr J part 1
Hubblecast 77: Hubble and the Bermuda Triangle of space
Hubblecast 76: Merging galaxies and droplets of starbirth
Hubblecast 75: Dwarf Galaxies that Pack a Punch
Hubblecast 74: Hubble and Heaven’s Carousel
Hubblecast 73: Hubble revisits the Monkey Head Nebula for 24th birthday snap
Hubblecast 72: Clues to a cosmic crime
Hubblecast 71: Visible echoes around RS Puppis
Hubblecast 70: Peering around cosmic corners
Hubblecast 69: What has Hubble learned from star clusters?
Hubblecast 68: The Hubble time machine
Hubblecast 67: Of galaxies and penguins — Arp 142
Hubblecast 66: Hubble uncovers the secrets of the Ring Nebula
Hubblecast 65: A whole new view of the Horsehead Nebula — celebrating Hubble's 23rd birthday
Hubblecast 64: It all ends with a bang!
Hubblecast 63: From the distant past - Hubble and art
Hubblecast 62: A spiral galaxy with a secret
Hubblecast 61: A Tour of NGC 5189
Hubblecast 60: Galaxy scores a bullseye
Hubblecast 59: Unweaving the rainbow
Hubblecast 58: Caught in the cosmic web
Hubblecast 57: Hubble's hidden treasures unveiled
Hubblecast 56: Dramatic change spotted on a faraway planet
Hubblecast 55: Crash of the Titans
Hubblecast 54: 22 years in images
Hubblecast 53: Hidden Treasures in Hubble's Archive
Hubblecast 52: The Death of Stars
Hubblecast 51: Star-forming region S 106
Hubblecast 50: Q&A with Dr J
Hubblecast 49: Supersonic jets from newborn stars
Hubblecast 48: Deep Observations of the Andromeda Galaxy
Hubblecast 47: Pandora's Cluster
Hubblecast 46: A tour of Centaurus A
Hubblecast 45: Building a treasure trove of observations
Hubblecast 44: Hubble spies on the Tarantula Nebula
Hubblecast 43: Hubble and Black Holes
Hubblecast 42: Hubble's Greatest Hits
Hubblecast 41: Hubble's History Told by Hubble's Scientists
Showing 1 to 50 of 90


Welcome to the Hubblecast! Hubblecast features news and Images from the NASA/ESA Hubble Space Telescope.

The Hubblecasts are offered for download in several formats: standard (.mov, .mpeg, .mp4, .m4v), HD (High Definition) and Full HD. Read the FAQ for more info on the specs of these formats.

High-Definition is rapidly evolving into one of the leading video formats in the broadcasting market.

Hubblecast HD and Full HD videos can be watched on TV by the use of digital media receivers such as Apple TV.

Now anyone can follow the hottest and coolest discoveries from the near and far Universe – anywhere, anytime, for free!

Parsec Awards Parsec Awards Medea Awards

Subscribe to the Hubblecast RSS Feeds!

Subscribe to Hubblecast
Subscribe to Hubblecast HD
Subscribe to Hubblecast Full HD

Frequently Asked Questions

What is Hubblecast?

Hubblecast is the name for Vodcasts produced by the ESA/Hubble team. A Vodcast is a short name for Video Podcast, and is a term used for the online delivery of video clips content via RSS.

Who is Dr. J?

Dr. J is the young enthusiastic host of the Hubblecast. He is a German astronomer and his scientific interests are in cosmology, particularly on galaxy evolution and quasars. Dr. J's real name is Joe Liske and he has a PhD in astronomy.

Link to Dr. J's Facebook Page

How can I watch Hubble Vodcasts?

You can watch Hubble Vodcasts on iTunes, that can be downloaded from this link. You can also watch them in any program that reads files in .m4v format (another name for .mp4 files encoded with the H.264 codec). One example is Quick Time Player, that can be downloaded from this link.

You can also use your favorite RSS feed aggregator and subscribe to the Hubblecast format of your choice. The links are provided below:

Subscribe to Hubblecast!
Subscribe to Hubblecast HD!
Subscribe to Hubblecast Full HD!

How can I receive and watch Hubble Vodcasts on my iPod?

  • In iTunes, go to: File -> Subscribe to Podcast
  • In the URL field, type: or or
    (depending on which version you want to receive)
  • Click on OK
  • On the left menu, click on the "Podcasts" section and you should see the "Hubble Space Telescope Vodcasts" there. The downloads should start automatically.
    Every time you open iTunes it will look for new episodes and download them in that section.
  • Then when you have your iPod connected to the computer you just drag and drop the episodes you want to watch to your iPod and voilá! You have it there!

What is the difference between HD and Full HD?

  • HD, or "HD-ready", is known as 720p and has a resolution of 720 lines vertically and 1280 picture elements horizontally. The letter “p” stands for progressive scan, which means that the lines of each frame are drawn in sequence. The frame rate is 24 frames per second.
  • Full HD, also known as 1080i, is a video format with a staggering 1,080 lines of vertical resolution, and 1920 picture elements in the horizontal direction. The letter “i” stands for interlaced scan, which means that the lines of each frame are drawn interlaced. Each frame consists of 1920 × 1080 pixels — some two million pixels in total, with a widescreen aspect ratio of 16:9. The frame rate is 50 frames per second.

Can you tell us something about the production process of Hubblecast?

There are some nice articles about the production of Hubblecast:

You can also get access to the Hubblecast on the links below:

The Hubblecast is also avalilable on:

Youtube Vimeo

Hubblecase on iPhone4

Accelerated by CDN77