Dead stars in our cosmic backyard: Astronomers spot four white dwarfs hiding under our noses

Researchers at the University of Warwick and the University of Colorado Boulder have directly observed, for the first time, four white dwarfs in binary star systems in our nearby region of space. These stellar binaries are all within 65 light-years of Earth, and one contains the ninth-closest white dwarf to the sun.

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Six massive landslides discovered on icy Pluto

Scientists have detected evidence of landslides on Pluto for the first time. A paper published in the journal Icarus reports that images taken by the New Horizons spacecraft during a flyby revealed six large landslides in three impact craters.

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Hubble discovers first of star cluster’s missing black holes

The massive globular star cluster Omega Centauri has puzzled astronomers for decades. It should be filled with black holes left behind by exploding stars, yet evidence for them is scarce. Now, astronomers using archival data from NASA’s Hubble Space Telescope and supporting observations from NASA’s James Webb Space Telescope have finally located the first stellar-mass […]

Distant exoplanets may be hiding water beyond Webb Telescope’s reach, study finds

The planets that appear most common in the universe could have a lot of water—but it could be hiding where telescopes can’t detect it, according to a new study led by scientists with the University of Chicago.

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The US just approved a giant space mirror to test ‘sunlight on demand.’ Low Earth orbit is getting weird

A giant mirror to create “sunlight on demand” was just approved by the United States Federal Communications Commission (FCC), despite opposition from astronomers and the public, and real safety concerns.

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Study reports the first detection of a sugar in interstellar space

Sugars are key biomolecules in living organisms, as they form the backbone of DNA and RNA and play a fundamental role in metabolic processes. In theories of the origin of life, sugars are also essential for the synthesis of the first nucleic acids. Despite their importance, one of the major questions in origin-of-life research is […]

Quantum-gravitational mechanism could explain the universe’s homogeneity

Our universe is known to be remarkably homogeneous and isotropic. This essentially means that matter is distributed evenly throughout the universe and that it looks almost the same in all directions.

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Gravitational waves reveal hidden populations within black hole mergers

Since gravitational waves were first detected in 2015, instruments including LIGO, Virgo and KAGRA have picked up a steady stream of signals from colliding black holes, building a catalog that now numbers in the hundreds. Yet despite this wealth of data, a fundamental question has remained stubbornly unresolved: How do these black holes actually form? […]

Oldest quasars ever discovered add to ‘perplexing’ space mystery

The Euclid space telescope has spotted the oldest quasars—the brightest objects in the universe—ever discovered, deepening a cosmic mystery that has been puzzling scientists.

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Could permanent magnets protect astronauts from solar storms?

Shielding astronauts from the deadly radiation they face is a central challenge for any designer of a deep-space crewed mission. Even relatively low levels of exposure over long periods can lead to everything from central nervous system damage to cancer. But current solutions, such as passive water shells or active superconducting magnets, have their own […]

X-ray tracking reveals uneven expansion in young supernova remnant G292.0+1.8

By analyzing data from NASA’s Chandra X-ray Observatory, Dutch astronomers have investigated a young, oxygen-rich supernova remnant known as G292.0+1.8. Results of the new study, published June 29 on the arXiv preprint server, yield important insights into the expansion of this remnant.

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Japan’s space agency conducts first test flight for experimental reusable rocket

Japan’s experimental reusable rocket took off and safely landed in a first test flight Saturday as the country seeks to achieve the technology key to cut launch costs and compete in the global space market dominated by SpaceX.

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To ancient astronomers, Theta Eridani was brighter for 1,000 years—now we know why

There’s a bit of a historical mystery surrounding the star Theta Eridani. Ptolemy in the second century A.D. and al-Sufi in A.D. 964 both recorded Theta Eridani as one of the 13 brightest stars in the sky. Hipparchus may have said the same. But there’s a problem. For it to be one of the 13 […]

China takes a page from SpaceX and recaptures the first stage of a rocket to reuse it

China successfully recaptured the first stage of a rocket after a launch on Friday in a breakthrough for the country’s space program, state media said.

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NASA space telescope maps magnetic fields of ‘Lighthouse’ pulsar

For the first time, scientists have used NASA’s IXPE (Imaging X-ray Polarimetry Explorer) to directly measure the magnetic fields of PSR J1101−6101, a pulsar located within what is often referred to as the Lighthouse Nebula. The results provide new insight into the structure of some of the most extreme objects in the cosmos, as NASA […]