A 3/8-inch to 1/4-inch drive adapter lets the ratchet serve a dual-role purpose, with a selection of extensions and a swivel joint to boot. A couple of extended flexing handle ratcheting ...

As a result, they detected 19 strongly-lensed, dual and projected quasars. The finding was reported in a paper published Jan. 15 on the arXiv pre-print server. Quasars, or quasi-stellar objects ...