Tag: The Universe

NASA Citizen Scientists Spot Object Moving 1 Million Miles Per Hour

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4 min read NASA Citizen Scientists Spot Object Moving 1 Million Miles Per Hour This artist’s concept shows a hypothetical white dwarf, left, that has exploded as a supernova. The object at right is CWISE J1249, a star or brown dwarf ejected from this system as a result of the explosion. This scenario is one explanation for where CWISE J1249 came from. W.M. Keck Observatory/Adam Makarenko Most familiar stars peacefully orbit the center of the Milky Way. But citizen scientists working on NASA’s Backyard Worlds: Planet 9 project have helped discover…

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Weird, ‘watermelon shape’ asteroids like Dimorphos and Selam may finally have an explanation

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The unusual shapes of the tiny asteroids Dimorphos and Selam have perplexed astronomers for years, but a new study finally explains how they got so strange. It also suggests these bizarrely shaped “moonlets” may be more common than scientists thought. Binary asteroids — pairs of asteroids that are essentially mini versions of the Earth-moon system — are pretty common in our cosmic neighborhood. These include the Didymos-Dimorphos duo that headlined NASA’s 2022 Double Asteroid Redirection Test (DART) mission. Previous research suggests that such binary asteroids form when a rubble-pile “parent”…

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NASA satellite data adds key pollutant to national environmental justice database

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Scientists harnessed satellite technology to track a key air pollutant previously absent from a national database, NASA announced earlier this week, marking a crucial step forward in monitoring differences in air quality across the U.S. and identifying groups whose health is unfairly affected. Measurements of nitrogen dioxide, which is primarily released into air through the burning of fossil fuels and can lead to respiratory diseases like asthma among other health problems, had been missing from the Environmental Justice Screening and Mapping Tool, or EJScreen. The database is maintained by the…

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Small black holes could play ‘hide-and-seek’ with elusive supermassive black hole pairs

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Binary pairings of small black holes could be used by astronomers in a cosmic game of “hide-and-seek” to hunt much larger, yet more elusive, supermassive black hole binaries. The technique could, therefore, help solve the mystery of how supermassive black holes grew so fast in the early universe. Detecting black holes is no easy task despite their reputation as fearsome cosmic titans. All black holes are surrounded by a one-way light-trapping boundary called an “event horizon” that ensures they emit no light. Even the supermassive black holes at the hearts…

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Regina Caputo Charts the Future of High-Energy Astrophysics

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Research astrophysicist Regina Caputo puzzles out how the universe works by studying the most extreme events in the cosmos. ​​Name: Regina CaputoTitle: Research Astrophysicist Organization: Astroparticle Physics Laboratory (Code 661) Regina Caputo is a research astrophysicist at NASA’s Goddard Space Flight Center in Greenbelt, Md. She focuses on technology development and support for gamma-ray telescopes. Photo credit: NASA/David Friedlander What do you do and what is most interesting about your role here at Goddard? I’m a research astrophysicist in the particle astrophysics lab at Goddard. I’m really interested in the most…

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Hubble Spotlights a Supernova

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2 min read Hubble Spotlights a Supernova This NASA/ESA Hubble Space Telescope image reveals the galaxy LEDA 857074. Credit: ESA/Hubble & NASA, R. J. Foley This NASA/ESA Hubble Space Telescope image features the galaxy LEDA 857074, located in the constellation Eridanus. LEDA 857074 is a barred spiral galaxy, with partially broken spiral arms. The image also captured a supernova, named SN 2022ADQZ, shining brightly on the right side of the galaxy’s bar. Several evolutionary paths can lead to a supernova explosion. One is the death of a supermassive star. When…

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Mars Express orbiter takes a deep dive into ancient Red Planet lake (images)

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 A Mars orbiter has just taken a “deep dive” into an ancient Martian lake, figuratively, at least.  Larger than any lake currently on Earth, the dried-up remnants of this ancient lakebed were just captured in incredible detail by the European Space Agency (ESA) Mars Express spacecraft, which has been orbiting the Red Planet since 2003. “This patch of Mars — shown in a new view from Mars Express’s High-Resolution Stereo Camera (HRSC) — is known as Caralis Chaos,” ESA scientists wrote in a statement. “We believe that water, and a…

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These nearby star systems could be good targets in the search for alien life

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NASA‘s Chandra X-ray space telescope has created a three-dimensional map of stars close to the sun that may help astronomers search for alien planets that could host life. The map created by Chandra — which just celebrated 25 years in orbit but is facing a troubling budget crunch — could inform scientists which exoplanets to direct future telescopes toward to conduct searches for habitable conditions. The stars mapped by the telescope are arranged in concentric rings around the sun, at distances between 16.3 light-years and 49 light-years. This is close…

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Stellar oddball: Nearby star rotates unlike any other

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A nearby star that’s similar to the sun in many ways is actually an unprecedented oddball, astronomers have discovered. The surprising star is V889 Herculis, located 115 light-years away in the constellation of Hercules. This otherwise sun-like young star spins in a way that astronomers have never seen before and could challenge our model of stellar rotation, which scientists had thought was well understood. Stars are roiling balls of superheated gas or plasma, meaning they don’t rotate like solid bodies. Instead, they display differential rotation; some layers move at different…

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10 new dead star ‘monsters’ discovered at the heart of the Milky Way

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Astronomers have discovered ten strange dead stars, or “neutron stars,” lurking near the heart of the Milky Way. These weirdo neutron stars are also spinning, meaning they are “pulsars.” Scientists suspect the overly dense nature of this oddball globular cluster, located 18,000 light-years from Earth, could result in these rapidly spinning dead stars taking on bizarre and twisted forms. The lot, for instance, includes several “spider pulsars” that destroy stars with plasma webs and a speed demon vampire star greedily feasting on its companion stars. Pulsars are neutron stars that…

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