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By Jackie Wattles, CNN (CNN) — A crucial test of NASA’s towering Space Launch System rocket is underway — marking one of the final steps before the vehicle launches four astronauts into deep space for the first time since the Apollo program ended more than five decades ago. The mission could launch as soon as

By Ella Nilsen, CNN (CNN) — Electricity costs are climbing nearly everywhere in the United States. But, in recent months, the Trump administration has framed the problem as one impacting only blue states. While several blue states like California, Massachusetts and Hawaii do indeed have some of the highest electricity rates in the country, federal

By Ashley Strickland, CNN (CNN) — Look to the sky this weekend for a chance to see February’s wintry full moon, which comes as four astronauts prepare to make a historic journey around the silvery orb. The full moon will peak at 5:09 p.m. ET Sunday, occurring near sunset and appearing fullest while low in

By Jackie Wattles, CNN (CNN) — Blue Origin announced Friday that it is pausing flights aboard its suborbital space tourism rocket New Shepard. Since 2021, New Shepard has provided 10-minute flights to the edge of space for wealthy thrill seekers, celebrities and special guests. The company, founded by Amazon billionaire Jeff Bezos, said in a

By Jacopo Prisco, CNN (CNN) — Scientists have discovered the largest organic molecule containing sulfur — a key ingredient for life — ever identified in interstellar space. The researchers call the discovery a “missing link” in scientists’ understanding of the cosmic origins of life’s chemistry. Sulfur is the 10th most abundant element in the universe

By Amarachi Orie, CNN (CNN) — As the sea ice melts due to climate change, the trend of polar bears getting thinner and having fewer cubs has been well documented in areas such as Baffin Bay, a stretch of ocean between Greenland and Canada’s Baffin Island, and Hudson Bay in northeastern Canada. A population of

By Ashley Strickland, CNN (CNN) — NASA’s Space Shuttle Challenger lifted off 40 years ago with an unusual crew. In addition to six astronauts, the mission took flight with a teacher on board. Christa McAuliffe, the first educator selected for a new Teacher in Space Project, said in a news conference before the flight that

CNN By Kristen Rogers, CNN (CNN) — At the dawn of the nuclear age, scientists created the Doomsday Clock as a symbolic representation of how close humanity is to destroying the world. On Tuesday, nearly eight decades later, the clock was set at 85 seconds to midnight — the closest the timepiece has ever been

CNN By Kristen Rogers, CNN (CNN) — At the dawn of the nuclear age, scientists created the Doomsday Clock as a symbolic representation of how close humanity is to destroying the world. On Tuesday, nearly eight decades later, the clock was set at 85 seconds to midnight — the closest the timepiece has ever been

By Kristen Rogers, CNN (CNN) — At the dawn of the nuclear age, scientists created the Doomsday Clock as a symbolic representation of how close humanity is to destroying the world. On Tuesday, nearly eight decades later, the clock was set at 85 seconds to midnight — the closest the timepiece has ever been to

By Jackie Wattles, CNN (CNN) — When four astronauts set off on their historic trip around the moon in NASA’s 16.5-foot-wide Orion spacecraft, they knew they’d be testing a known flaw with their spacecraft — one that had some experts urging the space agency not to fly the mission with humans on board. NASA remains

By Jacopo Prisco, CNN (CNN) — Space junk falling out of orbit and crashing toward Earth is a growing threat. Indeed, old satellites and spacecraft parts reenter our planet’s atmosphere more than three times a day. When these objects burn through the atmosphere, they can release harmful substances, and if they reach Earth’s surface, they

By Andrew Freedman, CNN (CNN) — The frigid temperatures, massive snow and deadly ice storm taking shape east of the Rockies might seem to conflict with life on a rapidly warming planet. But all of these things still happen, even with climate change, and some of them could be even more severe than before when

By Ella Nilsen, CNN (CNN) — As an electricity crunch drives bills higher around the country, big tech companies building power-hungry data centers are increasingly offering to pay for more of the energy they consume, so everyday people don’t get stuck with the bill. At least, that is the message from seven large tech companies

By Katie Hunt, CNN (CNN) — The outline of a hand made with red pigment on the wall of a cave in Indonesia at least 67,800 years ago may be the world’s oldest rock art, according to a new study. The faded hand stencil, along with other spectacular cave paintings on the island of Sulawesi,

By Jackie Wattles, CNN (CNN) — Longtime NASA astronaut Suni Williams announced her retirement Tuesday — officially making the unexpectedly long Boeing Starliner test flight her final foray to orbit as a member of the astronaut corps. Williams, who has set multiple spaceflight records since joining the agency in 1998, did not give insight into

By Laura Paddison, CNN (CNN) — The world has entered “an era of global water bankruptcy” with irreversible consequences, according to a new United Nations report. Regions across the world are afflicted by severe water problems: Kabul may be on course to be the first modern city to run out of water. Mexico City is

By Ashley Strickland, CNN (CNN) — Astronomers have long searched for clues that a hidden companion star sits out of view near the red supergiant star Betelgeuse. Now, they’ve uncovered a new piece of evidence: a trail like the wake behind a boat, cutting through Betelgeuse’s upper atmosphere, likely forged by the unseen companion. Betelgeuse’s