In the failed supernova of a red supergiant, the envelope of the star is ejected and expands, producing a cold, red transient source surrounding the newly formed black hole, as illustrated by the expanding shell (left to right). Some residual material may fall onto the black hole, as illustrated by the stream and the disk,

This is an artist’s impression of a quasar and neighboring merging galaxy. The galaxies observed by the team are so distant that no detailed images are possible at present. This combination of images of nearby counterparts gives an impression of how they might look in more detail. Credit: The image was created by the Max

Rocky planets are thought to form from giant impacts between planet-size bodies. Impacts with high energy and high angular momentum could form a synestia, a rotating mass of vaporized rock, where outer layers of the vaporized planet are in orbit around the rest of the body. Synestias give new insights into how planets and moons

The breakthrough was possible thanks to a high-end printer that allowed researchers to print soft and rigid materials together within the same components. This made it possible for researchers to design more complex shapes for the robot’s legs. The legs are made up of three parallel, connected sealed inflatable chambers, or actuators, 3-D-printed from a

Human activities have been changing near-Earth space and weather. Credit: NASA’s Goddard Space Flight Center/Genna Duberstein Our Cold War history is now offering scientists a chance to better understand the complex space system that surrounds us. Space weather — which can include changes in Earth’s magnetic environment — are usually triggered by the sun’s activity,

Left to right: River networks on Mars, Earth, and Titan. Researchers report that Titan, like Mars but unlike Earth, has not undergone any active plate tectonics in its recent past. Credit: Benjamin Black/NASA/Visible Earth/JPL/Cassini RADAR team. Adapted from images from NASA Viking, NASA/Visible Earth, and NASA/JPL/Cassini RADAR team The environment on Titan, Saturn’s largest moon,

This is an artist’s rendering of KELT-11b, a ‘styrofoam’-density exoplanet orbiting a bright star in the southern hemisphere. Credit: Image by Walter Robinson/Lehigh University Fifth-graders making styrofoam solar system models may have the right idea. Researchers at Lehigh University have discovered a new planet orbiting a star 320 light years from Earth that has the

Valley networks on Mars show evidence for surface runoff driven by rainfall. Credit: Image courtesy of Elsevier Heavy rain on Mars reshaped the planet’s impact craters and carved out river-like channels in its surface billions of years ago, according to a new study published in Icarus. In the paper, researchers from the Smithsonian Institution and

Sun glints off atmospheric ice crystals (circled in red) in this view captured by NASA’s EPIC instrument on NOAA’s DISCOVR satellite. Credit: NASA’s Goddard Space Flight Center One million miles from Earth, a NASA camera is capturing unexpected flashes of light reflecting off our planet. The homeward-facing instrument on NOAA’s Deep Space Climate Observatory, or

The atmosphere of the distant “warm Neptune” HAT-P-26b, illustrated here, is unexpectedly primitive, composed primarily of hydrogen and helium. By combining observations from NASA’s Hubble and Spitzer space telescopes, researchers determined that, unlike Neptune and Uranus, the exoplanet has relatively low metallicity, an indication of the how rich the planet is in all elements heavier

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