Two new papers describe hints to a brine-filled environment on the 4.5-billion-year-old space rock and the presence of amino ...

Examples of Lapworthella fasciculata shells (under scanning electron microscope ... Scale bars represent 200 micrometers. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy ...

Under ideal conditions, an optical microscope enables us to observe objects as small as 0.2 micrometer (mm; 1 micrometer is equal to one-millionth of a meter). Although scientists were ...