Growing energy efficiency divide making renters sweat

SpaceX launched a Falcon 9 rocket loaded with Starlink satellites Friday less than an hour before Elon Musk's company was set to lift off for what would be the largest IPO in Wall Street history.

Looking somewhat like a swarm of bees returning to their hive, this NASA Hubble Space Telescope image features the galaxy cluster MACS0329-0211. Galaxy clusters like MACS0329-0211 are important signposts in the story of how the structure of the universe evolved, and are the ultimate telescopic lenses, placing gravitationally lensed galaxies from the earliest stages of the universe into our view.

In a new study, Professor Shin Sugiyama of Hokkaido University and his team have directly confirmed for the first time that water from melting snow and ice, or meltwater, found at the surface of a glacier can drain to its base, causing glaciers in Antarctica to speed up and move toward the ocean.

Elon Musk's SpaceX began its first day as a public company on Wall Street on Friday after the biggest initial public offering in history, with the polarizing entrepreneur promising he will take humanity to Mars.