A SpaceX rocket that launched a pair of lunar landers slammed into the moon as predicted on Wednesday after drifting off course for the past year, scientists reported.

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Black holes are fascinating regions in space where gravity is so strong that nothing, even light, can escape them. The largest known black holes, called supermassive black holes, contain millions to billions of times the mass of the sun and are typically located at the centers of galaxies.

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Using observations from multiple powerful telescopes, a team of astronomers studied a red quasar nicknamed “the Hatchling” at redshift 3.7. They may have identified one of the clearest examples yet of a quasar caught in transition between a heavily obscured and fully exposed phase.

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Venus may be overwhelmingly inhospitable today, but many planetary scientists believe that it wasn’t always this way. Billions of years ago, some observational evidence suggested that our planetary neighbor may have looked far more like Earth, complete with oceans potentially capable of harboring life.

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Suddenly, the world is plunged into an eerie, violet darkness. The temperature drops. Birds and other animals, bewildered by unforeseen night, start behaving strangely. Stars and planets appear in the sky next to the blotted-out sun.

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The space around Earth is becoming increasingly crowded, with thousands of satellites and pieces of debris now sharing low Earth orbit. Even above this region—at altitudes of several hundred kilometers—the extremely thin upper atmosphere can slow satellites, making accurate information on atmospheric density essential for predicting satellite motion and preventing collisions.

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Data released by the Sloan Digital Sky Survey (SDSS) marks a landmark expansion in the study of accreting supermassive black holes (SMBHs). As part of the fifth generation of the survey (SDSS-V), the Black Hole Mapper (BHM) program is providing unprecedented insights into the masses, growth and physics of quasars and active galactic nuclei (AGN) […]

Named for the mythical valley where the god Dionysus was raised in secret by nymphs, the asteroid 44 Nysa inhabits the asteroid belt between Mars and Jupiter. Through observations by the Hubble Space Telescope, astronomers have determined it to be the largest and brightest known member of a rare category of asteroids called “E-types,” made […]