In the beginning, there was darkness..." - what's with the biblical quotes? In another couple of minutes the narrator claims that dark matter is estimated to make up 90% of the total mass in the Universe. Wrong; DM is estimated to amount to 90% of the total MATTER, but only 23-26% of the mass (mass-energy). Taking into account that the series had a whole episode on dark matter only a little while back, this is an egregious error.
The rest of the episode is excellent, though. The largest object in the Universe is proposed to be the "cosmic web" of dark matter. The intersections of this web contain galaxy superclusters, the biggest of which is currently thought to be Shapley (400 million light-years across). Next, we look at giant voids (biggest - Bootes), Lyman-alpha blobs (that aggregate into even more gigantic structures), the largest galaxies (cluster-diffuse), and galactic radio lobes.
Furthermore, the documentary covers the largest individual objects: black holes (supermassive ones can go up to 10 billion Suns' worth in mass), red hypergiant stars (2000 times larger than the Sun), the heaviest stars, and the largest known planet (TrES-4).
In conclusion, the episode surveys the hugest structures in our own Solar System, such as the moon Ganimed, the Olympus Mons volcano, and the Oort Cloud surrounding the Solar System.
9/10.
The rest of the episode is excellent, though. The largest object in the Universe is proposed to be the "cosmic web" of dark matter. The intersections of this web contain galaxy superclusters, the biggest of which is currently thought to be Shapley (400 million light-years across). Next, we look at giant voids (biggest - Bootes), Lyman-alpha blobs (that aggregate into even more gigantic structures), the largest galaxies (cluster-diffuse), and galactic radio lobes.
Furthermore, the documentary covers the largest individual objects: black holes (supermassive ones can go up to 10 billion Suns' worth in mass), red hypergiant stars (2000 times larger than the Sun), the heaviest stars, and the largest known planet (TrES-4).
In conclusion, the episode surveys the hugest structures in our own Solar System, such as the moon Ganimed, the Olympus Mons volcano, and the Oort Cloud surrounding the Solar System.
9/10.
