Latest about ray
Here's Why a Perfect Heart Shape Showed Up on a Girl's X-Ray
An unusual X-ray shows a cartoonish heart seemingly floating in a child's esophagus.
Why Archaeologists Used a 'Ray Gun' to Blast This Ancient Shipwreck Pottery
To trace the origins of ancient pottery, scientists used a method that sounds like it's borrowed from science fiction.
Dark Energy Gets Weirder: Mysterious Force May Vary Over Time
Dark energy is even more mysterious than astronomers had thought, a new study suggests.
What Is X-Ray Spectroscopy?
X-ray spectroscopy is used in many areas of science, medicine and technology, to better understand the characteristics of a material at the atomic level.
What Are CT Scans and How Do They Work?
A computed tomography (CT) scan is a quick and painless way to diagnose an injury, abnormality or disease.
What Are X-Rays?
X-rays are a form of electromagnetic radiation. One of the most common uses of X-rays is for medical imaging. X-rays are also used in treating cancer and in exploring the cosmos.
Weird Infrared Signal Emanates Across Space, But What Created It?
The signal extends over a huge swath of space, an area that's 2.5 times bigger than the orbit of Pluto.
