Elon Musk’s SpaceX was set to begin trading on the Nasdaq exchange Friday, with the biggest initial public offering in history expected to make the polarizing entrepreneur the world’s first trillionaire.

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Astronomers have discovered a huge reservoir of cold molecular gas, the direct fuel for star formation, in REBELS-25, a massive, star-forming galaxy. The team, led from Leiden University, focused on REBELS-25, seen when the universe was only about 700 million years old, around 5% of its current age. The research is published in the journal […]

We may not know what dark matter is, but we keep getting whiffs of it. “We are reaching a point where the observational evidence for dark matter is simply undeniable,” said Mayank Sharma, a Virginia Tech graduate student in physics.

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How supermassive black holes (SMBHs) in the centers of galaxies accrete material, how they feed back into the surrounding region, and how they regulate these processes to influence the evolution of their galaxies are all hot topics in astronomical and astrophysical research. Astronomers are nearly certain that all large galaxies like the Milky Way have […]

Private commercial operators are launching more rockets into space, carrying more people and pursuing more ambitious missions than ever before.

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Binary asteroid systems are widespread throughout our inner solar system. For decades, the standard paradigm held that many of them form when a rapidly spinning primary asteroid casts off material, which then reaccumulates into an elongated moon orbiting near the Roche limit.

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After only four short years, NASA’s James Webb Space Telescope (JWST) and observational cosmologists like Richard Ellis at University College London (UCL) have pushed the cosmic lookback time to an era when the universe’s very first stars and galaxies are within observational reach.

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A compact, multifrequency radar built by a team at NASA’s Jet Propulsion Laboratory will make it easier to collect information about dynamic cloud systems. Called CloudCube, this new instrument simultaneously probes the atmosphere with three radar signals, spanning 36 to 240 GHz, for optimized sensitivity to a wide range of water droplet and ice particle […]