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Astronomers Spot Debris Disk Around Dead Star, Hinting at Solar System's Future

11:07 AM ETConfirmed

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In Short: Scientists from the European Southern Observatory announced on October 27, 2026, that they have spotted a white dwarf star with a debris disk circling it, providing a rare glimpse into the future of our solar system.

Scientists from the European Southern Observatory announced on October 27, 2026, that they have spotted a white dwarf star with a debris disk circling it, providing a rare glimpse into the future of our solar system. This discovery could offer insights into the fate of Earth and other planets when the Sun eventually dies out in approximately 5 billion years.

The debris disk around the white dwarf, which is the dead core of a star similar to our Sun, suggests that planets may survive the star's expansion into a red giant and subsequent contraction into a white dwarf. This finding is significant as it could help astronomers understand the long-term evolution of planetary systems.

The white dwarf, designated J1328−1450, is surrounded by a ring of debris, indicating both material reaching the star and gas orbiting around it. This debris could be remnants of planets or asteroids that were once part of the star's planetary system, now reduced to dust and gas.

The discovery of this debris disk is particularly intriguing because it provides a snapshot of what our solar system might look like billions of years from now, after the Sun has expanded into a red giant and then contracted into a white dwarf, leaving behind only its dense core.

While concentrated solar energy systems are designed to convert sunlight into heat, which can then be used to drive traditional generating turbines, the technology has faced challenges in recent years. The cost of photovoltaic panels has plummeted, making them the cheapest source of power in most locations. However, concentrated solar systems still have unique advantages, such as the ability to store heat for use during periods of low solar resource.

Mark von Keszycki, from 247Solar, noted that their systems are their own backup, capable of running on either stored solar heat or combustion. The company's design allows the same hardware to handle both solar thermal output and fossil fuels, adding less than 10 percent to the total cost.

Bruce Anderson from 247Solar explained that the heat exchanger in their system performs the same function as the combustor, located in the turbine assembly after the compression stage and before the expander. This design flexibility allows the system to switch between solar and fossil fuel sources seamlessly.

The air coming out of the heat exchanger is still quite hot, around 250°C, and von Keszycki called it “a separate usable resource” that could be directed to a variety of applications, including industrial processes and absorption cooling.

Background

What's confirmed

• A ring of debris hints at planetary survivors This illustration shows a debris disc around the white dwarf J1328−1450 –– the dead core of a star similar to our Sun that expelled its outer layers at the end of its lifetime.

What's still developing

• Most of the site is covered with heliostats, devices that incorporate mirrors and a motorized tracking system that can keep their focus on a single point as the Sun moves across the sky.
• While the plant will be extremely small (1 megawatt) and mix in photovoltaics, the company had a unique angle: The same hardware that is handling the solar thermal output can simply be run using fossil fuels if there is a significant shortfall in renewable generation.
• Up to about a decade ago, there was a case to be made that concentrated solar energy had a bright future, as improvements in heat storage had turned it into a way to generate power around the clock.
• Currently, if you have a good site to generate solar power, then the economics of PV panels are hard to beat.
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Sources

• Ars Technicalink
• EarthSkylink
• KTVQlink
• Nautilus | Science Connectedlink
• The Brighter Side of Newslink
• bdnews24.comlink
• Soapcentrallink
• Femalefirstlink
• Middleeastmonitorlink
• Espnlink
• Fedagentlink
• The New York Timeslink
• Thoughtcataloglink
• Thenewsnowlink
• Povmagazinelink
• Chicagotribunelink
• European Southern Observatory (ESO) — video link