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A 62-page document written by President Donald Trump’s on-again-off-again pick to run NASA, billionaire Jared Isaacman, outlines a sweeping, ambitious, and at times controversial plan for the space agency.... The leak — according to a recent Ars Technica report and a source who confirmed the account to CNN — looked to have been part of an effort by Duffy, who is temporarily running NASA, to spur controversy and potentially thwart Isaacman’s renomination... A Mars shot and nuclear propulsion One eye-popping proposal in Project Athena is to set up a new Mars program, dubbed “Olympus.”...The document also includes numerous mentions of...

Explanation: A new star, likely the brightest supernova in recorded human history, lit up planet Earth's sky in the year 1006 AD. The expanding debris cloud from the stellar explosion, found in the southerly constellation of Lupus, still puts on a cosmic light show across the electromagnetic spectrum. In fact, this composite view includes X-ray data in blue from the Chandra Observatory, optical data in yellowish hues, and radio image data in red. Now known as the SN 1006 supernova remnant, the debris cloud appears to be about 60 light-years across and is understood to represent the remains of a...

Most Powerful Eruption in the Universe Discovered Astronomers have found the most powerful eruption in the universe using NASA's Chandra X-ray Observatory. A super massive black hole generated this eruption by growing at a remarkable rate. This discovery shows the enormous appetite of large black holes, and the profound impact they have on their surroundings. The huge eruption was seen in a Chandra image of the hot, X-ray emitting gas of a galaxy cluster called MS 0735.6+7421. Two vast cavities extend away from the super massive black hole in the cluster's central galaxy. The eruption, which has lasted for...