Proposed “megaconstellations” would contaminate images from telescopes in low-Earth orbit, including Hubble

Device weighing less than a paperclip is faster and more agile than its predecessors

New York aims to democratize access to hardware often limited to federal labs and Big Tech

Reorganization could shift mission of the United States’s largest funder of the physical sciences

Animal studies support idea that boosting fluid clearance could blunt neurological disorders

Specific class of immune cells help keep virus at bay for months or years—even in the absence of drugs

X-ray observatory and mission to Saturn’s moon Enceladus win as ESA’s science program sees growth

The project lost its data stream in 2022 after the war in Ukraine began

A daily pill can prevent the crippling disease, but its maker won’t bring it to market

Specialized appendage responds to female sex hormones, allowing males to find sex organs in the dark

Government pledges to more than triple research spending by 2030

Identity of the toe bones and other fossils could shake up the human family tree

DNA recovered from people buried at the site reveals surprises

Technology that uses a less known sensory system to substitute for olfaction could one day help anosmic people detect some odors

Unusually obstructive plumage compromises the vision of two types of pheasants—a first in birds

Bats could form a bridge between marine and terrestrial mammals, scientists say

Nation was first to legally protect frozen landscapes, a key source of water

Policy drops “paylines” based on peer-review scores and requires geography and other factors to guide approvals

The studies may still hold clues to the powers and limits of GLP-1 drugs

World Health Organization supports “spatial repellents” to prevent malaria, but it’s unclear who will pay for them

Loss of federal support leads to staff layoffs and fewer committees of outside experts

With China’s surge in renewable energy, greenhouse gases are reaching a turning point

Studies raise questions about the benefits of adjusting flight paths to minimize heat-trapping clouds

Studies related to HIV and other infectious diseases will be phased out, sources say; fate of the agency's animals remains unclear