It is 2,545 light-years away from us. Well, that is mind-blowing.
A record-tying eighth planet has been found in a faraway solar system, matching our own in number.
Even more amazing, machines and not humans made the discovery. NASA joined with Google on Thursday to announce the finding.
This illustration made available by NASA shows a comparison of the planets in the solar system and those orbiting the star Kepler-90. An eighth planet, Kepler-90i, has been found in the faraway solar system, matching our own in numbers. This is the only eight-planet solar system found like ours _ so far. (Wendy Stenzel/NASA, Ames Research Center via AP)
This eighth planet orbits the star known as Kepler-90. Like Earth, this new planet, Kepler-90i, is the third rock from its sun. But it's much closer to its sun — orbiting in just 14 days — and therefore a scorching 800 degrees Fahrenheit (427 Celsius) at the surface. In fact, all eight planets are scrunched up around this star, orbiting closer than Earth does to our sun.
This is the only eight-planet solar system found like ours — so far — tying for the most planets observed around a single star.
Our solar system had nine planets until Pluto was demoted to a dwarf planet in 2006 by the International Astronomical Union, a decision that still stands. Some astronomers, however, suspect there could be a large ninth planet out there: an elusive Planet X the size of Neptune but much farther out.
The Kepler-90 system also could have a ninth planet or more, according to the researchers. It is 2,545 light-years away; a light-year is 5.8 trillion miles.
Google used data collected by NASA's keen planet hunter, the Kepler Space Telescope, to develop the machine-learning computer program. It focuses on weak planetary signals — so feeble and numerous it would take humans ages to examine.
While machine learning has been used before in the search for exoplanets — planets beyond our solar system — it's believed to be the first time an artificial neural network like this has been used to find a new world.
"This is a really exciting discovery, and we consider it to be a successful proof of concept to be using neural networks to identify planets, even in challenging situations where the signals are very weak," said Christopher Shallue, a senior software engineer at Google in Mountain View, California.
NASA astrophysicist Jessie Dotson, the Kepler project scientist, is "so excited to see where this goes next."
"Who knows what potential insights might be gained," she said.
Shallue teamed up with astronomer Andrew Vanderburg of the University of Texas at Austin to develop the program. They essentially trained a computer to identify exoplanets based on Kepler's observations in changing stellar brightness — the subtle, fleeting dip in a star's brightness when a planet passes in front of it.
The two used a technique similar to what had been previously used by others to enable machines to distinguish between pictures of cats and dogs.
Besides identifying Kepler-90i, the machine-learning program also confirmed an exoplanet missed by astronomers in yet another solar system: Kepler-80g, the sixth planet in that particular solar system.
Shallue and Vanderburg plan to keep up the hunt, using the program to scour the 150,000-plus stars observed by Kepler.
In all, more than 3,560 exoplanets have been confirmed to date — two-thirds of them spotted by the 2009-launched Kepler — with another approximately 4,500 candidates awaiting verification.
It will be up to more advanced telescopes, like the James Webb Space Telescope targeted for launch in 2019, to study the atmospheres of these distant worlds and sniff out any traces of possible life, Vanderburg noted.
Shallue said Google plans to release all the code needed for someone to join the exoplanet search, using a basic home computer and the publicly available Kepler data. No specialized hardware should be needed, he said.
Neither NASA nor Google expect to put astronomers out of business.
Shallue sees this as a tool to help astronomers have more impact and increase their productivity.
"It certainly will not replace them at all," he assured reporters.
TRIANGLE, Virginia (AP) — President Joe Biden marked Earth Day by announcing $7 billion in federal grants for residential solar projects serving 900,000-plus households in low- and middle-income communities — while criticizing Republicans who want to gut his policies to address climate change.
Seeking reelection in November, Biden said, “Despite the overwhelming devastation in red and blue states, there are still those who deny the climate is in crisis."
He took specific aim at supporters of former President Donald Trump's “Make America Great Again” movement.
“My MAGA Republican friends don't seem to think it's a crisis,” Biden said Monday during a visit to Virginia's Prince William Forest Park, about 30 miles (48 kilometers) southwest Washington. “They actually want to repeal the Inflation Reduction Act, which provides the funding for the vast majority of these projects, and roll back protections for clean air and clean water.”
The president also used the trip to announce that nearly 2,000 corps positions are being offered across 36 states as part of his New Deal-style American Climate Corps green jobs training program, including jobs offered in partnership with the North American Building Trades Unions.
Biden used executive action last year to create the American Climate Corps modeled on Roosevelt’s New Deal.
“You’ll get paid to fight climate change,” he said Monday.
Biden made the announcements in a shady spot in Prince William Forest Park, which was established in 1936 as a summer camp for underprivileged youth from Washington. That was part of President Franklin D. Roosevelt’s Civilian Conservation Corps to help create jobs during the Great Depression.
The solar grants are being awarded by the Environmental Protection Agency, which unveiled the 60 recipients. The projects are expected to eventually reduce emissions by the equivalent of 30 million metric tons of carbon dioxide and save households $350 million annually.
Biden's announcements come as he is working to energize young voters for his reelection campaign. Young people were a key part of a broad but potentially fragile coalition that helped him defeat then-President Trump in 2020. Some have joined protests around the country of the administration's handling of Israel's war with Hamas in the Gaza Strip.
After his speech, Biden was asked by reporters about protests against Israel's handling of the war and replied, “I condemn the antisemitic protests.” But he also added, "I also condemn those who don’t understand what’s going on with the Palestinians.”
The White House issued a statement over the weekend denouncing "harassment and calls for violence against Jews.” Protests on college campuses, including those of Columbia and Yale Universities, prompted scores of arrests.
Biden's campaign is hoping that his climate efforts can energize young voters ahead of November. Senior administration officials said young Americans are keenly invested in the Biden climate agenda and want to help enact it and that the Climate Corps is a way to do so.
Solar energy is gaining traction as a key renewable energy source that could reduce the nation’s reliance on fossil fuels. Not only is it clean, but solar energy can also boost the reliability of the electric grid.
But solar energy can have high costs for initial installation, making it inaccessible for many Americans — and potentially meaning a mingling of environmental policy with election-year politics.
Forty-nine of the new grants are state-level awards, six serve Native American tribes and five are multi-state awards. They can be used for investments such as rooftop solar and community solar gardens.
“Broad community-based solar is our brightest hope for protecting people and our climate from the scourge of fossil fuels," said Jean Su, director of the Energy Justice program at the Center for Biological Diversity. “These targeted investments mean low-income families get clean energy that is affordable, resilient and protects our ecosystems. It’s great to see President Biden jumpstart this landmark program.”
The president has often used Earth Day as a backdrop to further his administration's climate initiatives. Last year, he signed an executive order creating the White House Office of Environmental Justice, meant to help ensure that poverty, race and ethnic status do not lead to worse exposure to pollution and environmental harm.
He has tried to draw a contrast with GOP congressional leaders, who have called for less regulation of oil production to lower energy prices. Biden officials counter that GOP policies benefit highly profitable oil companies and could ultimately undermine U.S. efforts to compete with the Chinese in the renewable energy sector.
The new awards came from the Solar for All program, part of the $27 billion “green bank” created as part of a sweeping climate law passed in 2022. The bank is intended to reduce climate and air pollution and send money to neighborhoods most in need, especially disadvantaged and low-income communities disproportionately affected by climate change.
Among those receiving grants are state projects to provide solar-equipped roofs for homes, college residences and residential-serving community solar projects in West Virginia, a non-profit operating Mississippi solar lease program and solar workforce training initiatives in South Carolina.
The taxpayer-funded green bank has faced Republican opposition and concerns over accountability for how the money gets used. EPA previously disbursed the other $20 billion of the bank’s funds to nonprofits and community development banks for clean energy projects such as residential heat pumps, additional energy-efficient home improvements and larger-scale projects like electric vehicle charging stations and community cooling centers.
Sens. Bernie Sanders of Vermont and Ed Markey of Oregon spoke at Monday's event along with New York Rep. Alexandria Ocasio-Cortez, all leading voices in the progressive wing of the Democratic Party. Ocasio Cortez referenced “peaceful protests” elsewhere while arguing, “It was the power of young people who have made today possible."
St. John reported from Detroit.
Alexa St. John is an Associated Press climate solutions reporter. Follow her on X, formerly Twitter, @alexa_stjohn. Reach her at ast.john@ap.org.
The Associated Press’ climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP’s standards for working with philanthropies, a list of supporters and funded coverage areas at AP.org.
President Joe Biden, left, and Rep. Alexandria Ocasio-Cortez, D-N.Y. are pictured after Biden spoke at Prince William Forest Park on Earth Day, Monday, April 22, 2024, in Triangle, Va. Biden announced $7 billion in federal grants to provide residential solar projects serving low- and middle-income communities and expanding his American Climate Corps green jobs training program. (AP Photo/Manuel Balce Ceneta)
President Joe Biden speaks at Prince William Forest Park on Earth Day, Monday, April 22, 2024, in Triangle, Va. Biden is announcing $7 billion in federal grants to provide residential solar projects serving low- and middle-income communities and expanding his American Climate Corps green jobs training program. (AP Photo/Manuel Balce Ceneta)
President Joe Biden speaks at Prince William Forest Park on Earth Day, Monday, April 22, 2024, in Triangle, Va. Biden is announcing $7 billion in federal grants to provide residential solar projects serving low- and middle-income communities and expanding his American Climate Corps green jobs training program. (AP Photo/Manuel Balce Ceneta)
President Joe Biden speaks at Prince William Forest Park on Earth Day, Monday, April 22, 2024, in Triangle, Va. Biden is announcing $7 billion in federal grants to provide residential solar projects serving low- and middle-income communities and expanding his American Climate Corps green jobs training program. (AP Photo/Manuel Balce Ceneta)
FILE - President Joe Biden speaks during a campaign event in Scranton, Pa., April 16, 2024. (AP Photo/Matt Rourke, File)
FILE - Nicholas Hartnett, owner of Pure Power Solar, holds a panel as his company installs a solar array on the roof of a home in Frankfort, Ky., July 17, 2023. (AP Photo/Michael Conroy, File)
