What is below Earth, since space is present in every direction?

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...
IEEE

Development of a Compact Optical Tracking System With Motorized Variable Zoom and Rotation for Tracking Range Adjustment in Image-Guided Surgery

Abstract: Interest in remote robot-assisted image-guided surgery is increasing to improve medical accessibility in areas where physical visits by medical staff are challenging. However, existing ...

X-ray spectra provide sharpest image to date of a rapidly spinning black hole

The X-Ray Imaging and Spectroscopy Mission (XRISM), a joint mission between the Japanese Aerospace Exploration Agency (JAXA) ...
IEEE

Rotation Invariant Sonar Image Segmentation for Undersea Cables

Abstract: Undersea cable detection is a prerequisite for cable maintenance and repair. However, extracting cables from side-scan sonar images is challenging due to the lack of details and interference ...