An even loftier goal is pinning down the gravitational wave background—you can think of it as the entire ocean of gravitational waves, dynamically criss-crossing as they are produced by black hole and neutron star collisions throughout the cosmos.

Source: https://gizmodo.com/brightest-gamma-ray-burst-ever-the-boat-1850273973

As anyone might infer, usually language is an enormous—often the determining—factor in pinning down the origins and movement of peoples.

Source: https://greekreporter.com/2023/08/20/dna-study-finds-etruscans-originated-steppes/

Her horns are ideal for long-range attacks due to their projectile nature, and they can be used for piercing or pinning down opponents.

Source: https://gamerant.com/my-hero-academia-best-heroes-not-japanese/

He told the body, made up of experts from scientific fields ranging from physics to astrobiology, of the difficulty in pinning down the source of reported close encounters due to the poor quality of data.

Source: https://www.dailystar.co.uk/news/world-news/bungling-boffins-mistake-kitchen-microwave-30126697