For over two centuries, we have watched the red giant R Leonis dim and brighten with regularity, but this 'heartbeat' is ...

Stochastic volatility is the unpredictable nature of asset price volatility over time. It's a flexible alternative to the Black Scholes' constant volatility assumption.

NASA’s Hubble Space Telescope captured variable stars and circumstellar disks in NGC 1333, showing protostars, Orion variable stars, and reflection nebulae in the Perseus Molecular Cloud.

An example of what variable speed limit signs look like above a highway in Washington. Courtesy of the Washington State Department of Transportation When icy conditions led to a 133-car pileup on ...

Mira in Cetus stands about halfway up the southern sky around 7 p.m. local time in early January. The star is a pulsating red giant about 300 light-years from Earth. The photo at left shows the star ...

Expect a high of 40 degrees that feels more like 38, with an overnight low of 36. Forecasters predict it will be colder with variable cloudiness; dry for holiday travel. Throughout the day, wind will ...

This Christmas, astronomers are highlighting a spectacular region of space that looks remarkably like a glowing holiday tree. Known as NGC 2264, this distant star-forming region sits about 2,700 light ...

Jillian Kubala, MS, is a registered dietitian based in Westhampton, NY. Jillian uses a unique and personalized approach to help her clients achieve optimal wellness through nutrition and lifestyle ...