Astronomers estimate that it will pull some 35,000-DVDs-worth of data down from the sky every second. So much that it would take 2 million years to play on your smartphone.

For now the bounty consists of the radio glow of some 1,300 distant galaxies spotted in a patch of sky about 20 times the size of the full moon, where only 70 galaxies had been counted before. Some of them are erupting in cataclysms as massive black holes in their hearts spew radioactive high-energy particles across the dark sea of space.

They were recorded by a set of 16 antennas in an array called MeerKAT, which was built by South Africa. It will grow to 64 dishes and eventually be folded into the Square Kilometer Array.