Coronal mass ejection from the sun at the same time as a recent X4.5 solar flare is about to collide with the Earth.

UV light can cause skin cancer ... "So that's at noon and that means you're going to get the most sunlight, the most ...

“Sometimes patients can feel so encumbered by headaches and general pressure from inappropriate fit that it results in ...

An invisible band of radiation with wavelengths from 400 to 10 nm, ultraviolet (UV) light starts at the end of visible light and ends at the beginning of X-rays. The primary source of ultraviolet ...

Ultraviolet light in sunlight can cause the skin to tan ... Changes in atoms and their nuclei can cause electromagnetic waves to be generated or absorbed. Gamma rays are produced by changes ...

Radiation with wavelengths just shorter than visible light is called ultraviolet; go even shorter and you get X-rays.

At the twilight of his career, Monet was going blind. Surgery restored his eyesight. But did it give him the uncanny vision ...

An international team at JILA is pioneering a nuclear clock that surpasses current atomic clocks in precision, potentially ...

NASA's Solar Dynamics Observatory recorded a significant solar event when the Sun unleashed an intense class solar flare.

A recent breakthrough has paved the way for timekeeping even more precise than the measurements performed by atomic clocks.

A West Virginia University researcher at the Center for Gravitational Waves and Cosmology is pulling back the curtain on an ...

Nuclear clocks would measure time based on changes inside an atom's nucleus, which would make them less sensitive to external disturbances and potentially more accurate than atomic clocks. These ...