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Pluto’s hazy atmosphere may be collapsing as it moves farther from the sun

Pluto is on an icy march away from the sun. In 2114, it will turn back, but until then, its elliptical orbit will carry it to colder and darker parts of the outer solar system. This is Pluto’s first time entering the outer solar system since its 1930 discovery, and along this journey, its atmosphere […]

Study lays groundwork for classifying lunar soil

As we move closer to supporting a sustainable human presence on the moon, researchers are investigating how its soils can provide valuable resources and even grow food. An article in the Soil Science Society of America Journal proposes a classification framework to help scientists better understand lunar soils. This emerging science of “planetary pedology,” the […]

What happens to a moon when its planet is stolen?

We have known for a while that the Milky Way is full of homeless worlds. Rogue planets, free-floating planets—call them what you like—but they are planets formed in orderly systems around ordinary stars and then thrown out, either by a gravitational shove from a sibling planet or by a star that strayed too close. What […]

A 21-hour dip could help explain Tabby’s star’s decade-long dimming mystery

Since 2016, an ordinary-looking F-type star called KIC 8462852, nicknamed Tabby’s star, has behaved anything but ordinarily. In a new study published in the Monthly Notices of the Royal Astronomical Society on July 6, researchers revisited this star to find out what is really causing its irregular dimming.

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August’s total solar eclipse will sweep over Spain, Iceland and Greenland

For the first time in more than a century, a total solar eclipse is coming to mainland Spain with an even longer encore next summer.

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Webb reveals warped structure in nearby TW Hydrae’s protoplanetary disk

Using the James Webb Space Telescope (JWST), astronomers obtained high-contrast coronagraphic images of the protoplanetary disk around the young, nearby star TW Hydrae. Results of the observational campaign, published July 27 on the preprint server arXiv, shed more light on the nature of this disk.

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DESI side project reveals the spectra of disintegrated exoplanets

Using spectral data from the Dark Energy Spectroscopic Instrument (DESI), astronomers have gained some of the clearest evidence yet that white dwarf stars are accreting debris from disintegrating exoplanets. Captured while DESI was unable to study its primary targets: distant galaxies, the results provide unprecedented insights into the chemical makeup of rocky exoplanets, revealing compositions […]

Solar wind stirs Mars’ upper atmosphere, boosting ion loss to space

Our sun constantly releases a stream of high-speed charged particles, known as the solar wind. Unlike Earth, Mars does not have a strong global magnetic field to shield its atmosphere from this flow. As a result, the solar wind can interact directly with Mars’ upper atmosphere and gradually strip atmospheric particles into space.

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Laying odds on the potential for Martian water near future landing zones

We know Mars has water ice in its polar regions, but astronauts (and their solar-powered equipment!) would much rather experience life closer to Mars’ equator. As NASA looks toward landing humans on the red planet, the Planetary Science Institute (PSI) is mapping where water should and shouldn’t be found and using statistics to quantify its […]

Moonquakes could reveal ice buried beneath lunar south polar craters

Finding water on the moon may only be a matter of detecting the right vibrations.

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Homing in on the X-ray sky with eROSITA’s second data release

The German eROSITA consortium (eROSITA-DE), which includes the University of Bonn and is led by the Max Planck Institute for Extraterrestrial Physics (MPE), has released its second major public data set, the “eROSITA Data Release 2” (DR2).

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ELT’s spectrograph could ‘sniff out’ biosignatures on other worlds

Before any major telescope commissioning, there are dozens of papers that attempt to define what we can expect from it. We’re starting to see some come through for the Extremely Large Telescope (ELT), which hopefully will get a more imaginative name when the 39 m (128-foot) behemoth is officially commissioned in Chile in the 2030s. […]

Curiosity Blog, Sols 4961-4967: Approaching a break in the rock record?

Curiosity spent the week continuing to climb her way through the layers of Mount Sharp, exploring the sedimentary rock strip chart of Martian history. The rover has reached a layer where the science team had spotted a possible “erosional supersurface” by analyzing orbital data alongside images of the layers in the buttes above us.

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A discarded SpaceX rocket is on a high-speed collision course with the moon

A drifting SpaceX rocket is on a collision course with the moon after launching a pair of lunar landers more than a year ago.

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Japan probe made closest-ever asteroid flyby: space agency

A Japanese probe flew 400 meters (1,312 feet) from a near-Earth asteroid this month, marking the closest approach ever recorded for such a mission, the space agency said.

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