Hubblecast HD
Hubblecast 120 Light: Continued Discrepancy in the Universe's Expansion Rate
Thu, 25 Apr 2019 16:00:00 +0200
Hubblecast 119: Hubble’s 29th anniversary
Thu, 18 Apr 2019 16:00:00 +0200
Hubblecast 118: How the first stars transformed the Universe
Wed, 03 Apr 2019 12:00:00 +0200
Hubblecast 117 Light: Hubble & Gaia weigh the Milky Way
Thu, 07 Mar 2019 16:00:00 +0100
Hubblecast 116: Henrietta Leavitt — ahead of her time
Wed, 20 Feb 2019 15:00:00 +0100
Born in 1868, Henrietta Leavitt was an astronomer ahead of her time, whose work helped to revolutionise our understanding of the Universe. While working at Harvard Observatory, she began to study stars of fluctuating brightness. She made a crucial observation about these objects, which gave astronomers a new way to measure distances, ultimately leading to such impactful discoveries as the expansion of the Universe.
Hubblecast 115 Light: Triangulum Galaxy in unrivalled detail
Mon, 07 Jan 2019 18:00:00 +0100
Hubblecast 114: How does Hubble orientate itself in space?
Wed, 19 Dec 2018 16:00:00 +0100
This new Hubblecast episode takes a detailed look into the refined Pointing Control System that allows Hubble to keep its gaze into the Universe firm and steady.
Hubblecast 113: Nancy Roman — The mother of Hubble
Mon, 08 Oct 2018 16:00:00 +0200
Hubblecast 112 Light: Mars and Saturn
Thu, 26 Jul 2018 16:00:00 +0200
Mars and Saturn are among the most popular planets. This new episode of the Hubblecast presents the images Hubble took of these planets in summer 2018.
Hubblecast 111: Hubble sees `Oumuamua getting a boost
Wed, 27 Jun 2018 19:00:00 +0200
Astronomers have found that ‘Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. Using data from the NASA/ESA Hubble Space Telescope, in cooperation with ground-based telescopes, a team of researchers concluded that ‘Oumuamua is most likely outgassing — suggesting that this enigmatic interstellar nomad is a peculiar comet rather than an asteroid.
Hubblecast 110 Light: New test of Einstein’s general relativity
Thu, 21 Jun 2018 20:00:00 +0200
An international team of astronomers using Hubble has made the most precise test of general relativity yet outside our Milky Way.
Hubblecast 109: Diving into the Lagoon Nebula
Thu, 19 Apr 2018 16:00:00 +0200
On 24 April 1990, Hubble was launched into space. To celebrate its 28th year in orbit, some of Hubble’s precious observation time was used to observe the colourful Lagoon Nebula. One of only two star-forming nebulae visible to the unaided eye, this spectacular stellar nursery is not quite the tranquil landscape its name suggests.
Hubblecast 108 Light: Hubble finds most distant star
Mon, 02 Apr 2018 17:00:00 +0200
Astronomers have used Hubble to make an incredible discovery — they have observed the most distant star ever seen. The bright blue star existed only 4.4 billion years after the Big Bang. This incredible distant star allows astronomers to learn more about the formation and evolution of stars in the early Universe.
Hubblecast 107: Decoding the colours of NGC 3344
Wed, 14 Feb 2018 16:00:00 +0100
Our eyes detect only visible light, but on board Hubble are a variety of instruments that together detect many different wavelengths of light. This means that Hubble is able to observe galaxies over a wide range of wavelengths to reveal features that would otherwise remain invisible to our eyes.
Hubblecast 106 Light: Flying through the Orion Nebula
Mon, 15 Jan 2018 16:30:00 +0100
This visualisation takes the viewer on a breathtaking flight through the Orion Nebula, a nearby star-forming region. The video has been produced using scientific imagery and data from the NASA/ESA Hubble Space Telescope.
Hubblecast 105 Light: Best of Hubble 2017
Thu, 21 Dec 2017 16:00:00 +0100
Hubblecast 104: Illustrating Hubble’s discoveries
Tue, 19 Dec 2017 16:00:00 +0100
Hubble is best known for its stunning images and amazing discoveries. But sometimes the discoveries do not come hand-in-hand with a breathtaking view of the Universe. Raise the curtains for the artists creating impressions of the cosmos! In this Hubblecast we learn how artist’s impressions are made and how realistic they are.
Hubblecast 103: Hubble observes source of gravitational waves for the first time
Mon, 16 Oct 2017 16:00:00 +0200
Astronomers using the NASA/ESA Hubble Space Telescope have observed a visible counterpart to gravitational waves for the first time: a kilonova from merging neutron stars.
Hubblecast 102: Taking the fingerprints of exoplanets
Wed, 11 Oct 2017 16:00:00 +0200
The atmosphere of an exoplanet can reveal a wealth of information, such as the planet’s temperature, its air pressure, and whether it is suitable for life. However, studying exoplanet atmospheres is one of the most challenging tasks in modern astronomy — and a challenge for Hubble too. This new episode of the Hubblecast describes how exoplanet atmospheres are analysed and what makes it such a challenge.
Hubblecast 101: Our Place in Space
Wed, 28 Jun 2017 15:00:00 +0200
Hubblecast 100: Best of Hubblecast
Thu, 20 Apr 2017 12:00:00 +0200
Throughout its 27-year history, Hubble has seen enough of the Universe to fill 100 episodes of the Hubblecast — 10 hours worth! These episodes have captured the science, culture, trials, and successes of Hubble, ranging from its spectacular images to its cutting-edge discoveries to its impact on society.
Hubblecast 99: Hubble’s biggest discoveries — part 2
Wed, 22 Mar 2017 16:00:00 +0100
To many, Hubble is best known for its stunning images of celestial objects, but among astronomers it is admired for the valuable data it delivers. Hubble has helped revolutionise astronomy, including shedding light on dark matter and dark energy, lifting the veil on black holes, and peering into the dusty regions around stars to image exoplanets. This new Hubblecast is the second part of an exploration of some of Hubble’s most important discoveries throughout its history.
Hubblecast 98: Hubble’s biggest discoveries — part 1
Thu, 23 Feb 2017 16:00:00 +0100
Since its launch in 1990, Hubble has revolutionised our knowledge of astronomy. From imaging the most stunning phenomena in the cosmos, to the study of the invisible parts of the Universe, to observing the most distant objects ever seen. Hubble’s sharp eye has been at the forefront of astronomical exploration. This new Hubblecast is the first part of an exploration of some of Hubble’s most important discoveries in its almost 27-year history.
Hubblecast 97: Hubble, exoplanets and the hunt for life
Thu, 15 Dec 2016 15:00:00 +0100
Since astronomers discovered that the stars in the sky are other suns, humanity has wondered if they are also orbited by planets and if those planets host alien life. Since the discovery of the first exoplanet only 25 years ago Hubble is among the many instruments trying to answer these questions. This new Hubblecast tells the story of what we know so far and what we can hope for in the future.
Hubblecast 96: How many galaxies are there?
Thu, 13 Oct 2016 16:00:00 +0200
Since Edwin Hubble discovered that the Milky Way is not the only galaxy in the Universe astronomers try to find out how many of them are there. This new Hubblecast focusses on the question “How many galaxies are there?” including the new numbers achieved in 2016.

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