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Earth-like Planet Discovered by Researchers

Gliese 12 b's distance of 40 lights years away means it is too far away to experience more closely (NASA)
Gliese 12 b's distance of 40 lights years away means it is too far away to experience more closely (NASA)
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Earth-like Planet Discovered by Researchers

Gliese 12 b's distance of 40 lights years away means it is too far away to experience more closely (NASA)
Gliese 12 b's distance of 40 lights years away means it is too far away to experience more closely (NASA)

Scientists at the University of Warwick say they have been part of an international team to discover a new new habitable Earth-sized planet.

Working with NASA and the European Space Agency (ESA), they said Gliese 12 b has the same temperature as the 2022 UK heatwave and is one of the few known rocky planets where humans could theoretically survive, BBC reported.

But the planet's distance of 40 lights years away means it is too far away to experience more closely, the university said.

Warwick astrophysicist Dr Thomas Wilson said: "This is a really exciting discovery and will help our research into planets similar to Earth across our galaxy."

The planet has an estimated surface temperature of about 42C, but the scientists said they were still unsure of what, if any, its atmosphere was like.

It orbits its version of the sun every 12.8 days and is a similar size to Earth.

The planet’s equivalent of the Sun, called Gliese 12, is a cool, red dwarf located in the constellation Pisces and the planet receives 1.6 times more energy from its star as Earth does from the sun, the university said.

The team used data from NASA and ESA’s satellites to confirm the planet’s existence and characteristics like its size, temperature, and distance away from Earth.

"Thrillingly, this planet is the closest Earth-sized and temperature planet we know," Dr Wilson added.

"The light we are seeing now is from 1984 (40 years ago) – that’s how long it has taken to reach us here on Earth.

"Planets like Gliese 12 b are very few and far between, so for us to be able to examine one this closely and learn about its atmosphere and temperature is very rare."

According to BBC, Larissa Palethorpe, co-lead of the study and doctoral student at the University of Edinburgh and University College London said it was "a unique candidate" for further atmospheric study to help unlock some aspects of our own solar system’s evolution.

"Earth remains habitable, but Venus does not due to its complete loss of water. Gliese 12 b’s atmosphere could teach us a lot about the habitability pathways planets take as they develop," she added.

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NASA's Lucy Spacecraft Is Speeding toward Another Close Encounter with an Asteroid

This image from video animation provided by NASA in October 2022 depicts the Lucy spacecraft. (NASA via AP)
This image from video animation provided by NASA in October 2022 depicts the Lucy spacecraft. (NASA via AP)
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NASA's Lucy Spacecraft Is Speeding toward Another Close Encounter with an Asteroid

This image from video animation provided by NASA in October 2022 depicts the Lucy spacecraft. (NASA via AP)
This image from video animation provided by NASA in October 2022 depicts the Lucy spacecraft. (NASA via AP)

NASA’s Lucy spacecraft will swoop past a small asteroid this weekend as it makes its way to an even bigger prize: the unexplored swarms of asteroids out near Jupiter.

It will be the second asteroid encounter for Lucy, launched in 2021 on a quest that will take it to 11 space rocks. The close approaches should help scientists better understand our early solar system when planets were forming; asteroids are the ancient leftovers.

The upcoming flyby is a dress rehearsal for 2027 when Lucy reaches its first so-called Trojan asteroid near Jupiter.

Cranking up its three science instruments, the spacecraft on Sunday will observe the harmless asteroid known as Donaldjohanson. The encounter will take place 139 million miles (223 million kilometers) from Earth in the main asteroid belt between Mars and Jupiter, so far away it will take 12 minutes for each bit of data to reach flight controllers in Colorado.

The paleontologist for whom the asteroid is named plans to be at spacecraft builder and operator Lockheed Martin’s Mission Control for all the action. He discovered the fossil Lucy in Ethiopia 50 years ago; the spacecraft is named after the famous human ancestor.

NASA’s Lucy will venture as close as 596 miles (960 kilometers) to this asteroid, an estimated 2 ½ miles (4 kilometers) in length but much shorter in width. Scientists should have a better idea of its size and shape following the brief visit. The spacecraft will zoom by at more than 30,000 mph (48,000 kph).

The asteroid is among countless fragments believed to have resulted from a major collision 150 million years ago.

“It's not going to be a basic potato. We already know that,” said lead scientist Hal Levison of Southwest Research Institute.

Rather, Levison said the asteroid may resemble a bowling pin or even a snowman like Arrokoth, the Kuiper Belt object visited by NASA's New Horizon spacecraft in 2019. The other possibility is that there are two elongated but separate asteroids far apart.

“We don’t know what to expect. That’s what makes this so cool,” he said.

There will be no communications with Lucy during the flyby as the spacecraft turns its antenna away from Earth in order to track the asteroid. Levison expects to have most of the science data within a day.

Lucy’s next stop — “the main event,” as Levison calls it — will be the Trojan asteroids that share Jupiter’s orbit around the sun. Swarms of Trojans precede and follow the solar system’s largest planet as it circles the sun. Lucy will visit eight of them from 2027 through 2033, some of them in pairs of two.

Lucy’s first asteroid flyby was in 2023 when it swept past little Dinkinesh, also in the main asteroid belt. The spacecraft discovered a mini moon around it.