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There are Four Ways to Build with Regolith on the Moon April 24, 2024
Over the last few years I have been renovating my home. Building on Earth seems to be a fairly well understood process, after all we have many different materials to chose from. But what about future lunar explorers. As we head closer toward a permanent lunar base, astronauts will have very limited cargo carrying capability […]
Mark Thompson
Purple Bacteria — Not Green Plants — Might Be the Strongest Indication of Life April 23, 2024
Astrobiologists continue to work towards determining which biosignatures might be best to look for when searching for life on other worlds. The most common idea has been to search for evidence of plants that use the green pigment chlorophyll, like we have on Earth. However, a new paper suggests that bacteria with purple pigments could […]
Nancy Atkinson
See the Southern Ring Nebula in 3D April 23, 2024
Planetary nebula are some of nature’s most stunning visual displays. The name is confusing since they’re the remains of stars, not planets. But that doesn’t detract from their status as objects of captivating beauty and intense scientific study. Like all planetary nebula, the Southern Ring Nebula is the remnant of a star like our Sun. […]
Evan Gough
Hubble Has Accidentally Discovered Over a Thousand Asteroids April 23, 2024
The venerable Hubble Space Telescope is like a gift that keeps on giving. Not only is it still making astronomical discoveries after more than thirty years in operation. It is also making discoveries by accident! Thanks to an international team of citizen scientists, with the help of astronomers from the European Space Agency (ESA) and […]
Matt Williams
NASA Restores Communications with Voyager 1 April 23, 2024
The venerable Voyager 1 spacecraft is finally phoning home again. This is much to the relief of mission engineers, scientists, and Voyager fans around the world. On November 14, 2023, the aging spacecraft began sending what amounted to a string of gibberish back to Earth. It appeared to be getting commands from Earth and seemed […]
Carolyn Collins Petersen

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