Alexandra Witze,

Alexandra Witze works for Nature magazine. Two Giant U.S. Telescopes Are Threatened by Federal Funding Cap The Thirty Meter Telescope and Giant Magellan Telescope might need to compete for survival in the face of federal spending limits nMars Has a Surprise Layer of Molten Rock Inside the Red Planet's liquid-metal core is smaller than scientists thought ȁ9Alexandra Witze, Nature magazine ⟦How to Save Greenland's Massive Ice Sheet xThe Greenland Ice Sheet could experience runaway melting if the world overshoots climate targets, but even then quick action could stabilize it ⟦Alexandra Witze, Nature magazine ⟦How Would We Know There's Life on Earth? This Bold Experiment Found Out xThirty years ago, astronomer Carl Sagan convinced NASA to turn a passing space probe's instruments on Earth to look for life ȁ4with results that still reverberate today ⟦Alexandra Witze, Nature magazine ⟦Bringing Mars Rocks to Earth Could Cost an Astronomical $11 Billion xNASA's Perseverance rover has collected valuable samples, but a new report says the plan to fetch them is unworkable ⟦Alexandra Witze, Nature magazine ⟦JWST's Hunt for Habitable Exoplanets Finds Disappointment, Again xObservations from the James Webb Space Telescope suggest that TRAPPIST-1 c, the second world in a seven-planet system, lacks an atmosphere ⟦Alexandra Witze, Nature magazine ⟦JWST Spots Biggest Water Plume Yet Spewing from a Moon of Saturn xThe huge watery cloud spurting from Enceladus could carry the ingredients for life farther into space than previously known ⟦Alexandra Witze, Nature magazine ⟦JWST Sees No Atmosphere on ρ Earthlikeρ TRAPPIST-1 Exoplanet xTRAPPIST-1b is probably an airless rock, but the same may not be true for its six Earth-sized siblings ⟦Alexandra Witze, Nature magazine ⟦NASA's Asteroid-Bashing DART Mission Was Wildly Successful xNew studies have revealed the spacecraft's final moments and the remarkable aftermath of its impact ⟦Alexandra Witze, Nature magazine ⟦Will an AI Be the First to Discover Alien Life? xSETI, the search for extraterrestrial intelligence, is deploying machine-learning algorithms that filter out earthly interference and spot signals humans might miss ȁ9Alexandra Witze, Nature magazine ⟦NASA Really, Really Won't Rename JWST despite Community Pushback xAn investigation by agency historian finds no evidence explicitly linking former director James Webb with anti-LGBTQ+ actions ρAlexandra Witze, Nature magazine ⟦Dying NASA Spacecraft Records Epic Marsquakes xAs the InSight lander reports the largest-ever meteorite strikes on Mars, scientists wish it a fond farewell ⟦Alexandra Witze, Nature magazine ρUnsustainable: How Satellite Swarms Pose a Rising Threat to Astronomy xSpaceX and other companies are still struggling to make their satellites darker in the night sky ⟦Alexandra Witze, Nature magazine ρCostly SOFIA Telescope Faces Termination after Years of Problems xNASA and the German space agency ground the telescope on a plane, citing concerns over cost and productivity ⟦Alexandra Witze, Nature magazine ρNext Stop, Uranus? Icy Planet Tops Priority List for Next Big NASA Mission xAn influential panel recommends making the ice giant a likely destination for a flagship space mission ⟦Alexandra Witze, Nature magazine