Science and Technology

A spacecraft that was headed to the surface of the moon has ended up back at Earth instead, burning up in the planet’s atmosphere on Thursday afternoon.Astrobotic Technology of Pittsburgh announced in a post on the social network X that it lost communication with its Peregrine moon lander at 3:50 p.m. Eastern time, which served as an indication that it entered the Earth’s atmosphere over the South Pacific at around 4:04 p.m.“We await independent confirmation from government entities,” the company said.It was an intentional, if disappointing, end to a trip that lasted 10 days and covered more than half a…

Sheryl Sandberg said on Wednesday that she would not stand for re-election to Meta’s board of directors in May, ending her 14½-year run in a formal role at the social networking company.Ms. Sandberg had remained on the nine-seat board after stepping down as Meta’s chief operating officer in 2022. In a post to her personal Facebook page on Wednesday, she said she would still be an adviser to the company and would “always be there to help the Meta teams.”“The Meta business is strong and well positioned for the future, so this feels like the right time to step away,”…

Breana Newton, a legal coordinator in Princeton, N.J., who posts regularly about books on TikTok, was one of the people who responded to Ms. Blalock’s video. “I am going to show you bookshelf wealth,” Ms. Newton, 33, says in a video of her own. “Ready?”She then gives viewers a brief tour of her home, showing books everywhere — on shelves, in overflow piles here and there, and strewed across the bed. Absent is the sense that the rooms have been staged, or that the books were bought with the consideration of how they would look on Instagram.In an interview, Ms.…

California has long championed renewable energy, but a change in the state’s policies last year has led to a sharp decline in the installation of residential rooftop solar in the state.Thousands of companies — including installers, manufacturers and distributors — are reeling from the new policy, which took effect in April and greatly reduced incentives that had encouraged homeowners to install solar panels. Since the change, sales of rooftop solar installations in California dropped as much as 85 percent in some months of 2023 from a year earlier, according to a report by Ohm Analytics, a research firm that tracks…

Listen and follow ‘Hard Fork’Apple | Spotify | Amazon | YouTubeCasey is taking his newsletter Platformer off Substack, as criticism over the company’s handling of pro-Nazi content grows. Then, The Wall Street Journal spoke with witnesses who said that Elon Musk had used LSD, cocaine, ecstasy and psychedelic mushrooms, worrying some directors and board members of his companies. And finally, how researchers found a new class of antibiotics with the help of an artificial intelligence algorithm used to win the board game Go.Today’s guests:Kirsten Grind, enterprise reporter for The Wall Street JournalFelix Wong, postdoctoral fellow at M.I.T. and co-founder of…

Federal regulators on Wednesday approved a new financial product that tracks the price of Bitcoin, a landmark moment for the cryptocurrency industry that proponents hope will increase investment in the technology.The Securities and Exchange Commission authorized 11 applications to offer exchange-traded funds tied to Bitcoin, a potentially simpler way for people to invest in digital assets. Some of the largest financial firms in the world, including the asset managers BlackRock and Fidelity, were approved to offer the products, known as E.T.F.s, which could begin trading as soon as Thursday on traditional platforms like the Nasdaq.The approvals were hailed as a…