The red cell distribution width (RDW) blood test measures how equal your red blood cells are in size. One of several tests included in a complete blood count (CBC), RDW is measured as a percentage.

If you spotted comet C/2023 A3 (Tsuchinshan-ATLAS) in person, or seen photos online this October, you might have been inspired to learn more about these visitors from the outer Solar System. Get ready ...

While many dubbed it the "Halloween comet," the cosmic snowball of ice and dust more officially known as C/2024 S1 (ATLAS), disintegrated on Oct. 28 as it approached the sun. The comet's final ...

A recently discovered comet that some stargazers had hoped to see during Halloween week has disintegrated before the day of ghosts and ghouls. NASA confirmed Tuesday its sun-observing spacecraft ...

While many backyard astronomers were waking up early to catch a glimpse of Comet Tsuchinshan-ATLAS and its stunning anti-tail, another comet was making its way through our solar system.

Watch Comet C/2024 S1 (ATLAS) make a death dive into the sun in this eerie footage from the Solar and Heliospheric Observatory spacecraft. When you purchase through links on our site, we may earn ...

Explore the universe with news on fascinating discoveries, scientific advancements and more. A comet nicknamed the “Halloween comet” disintegrated on Monday during its closest approach of the ...

A NASA and European spacecraft watched as a newly discovered comet dubbed the "Halloween comet" met its demise after its close approach to the Sun. According to NASA, the SOHO spacecraft captured ...

Astrophotographer Miguel Claro captured Comet C/2023 A3 (Tsuchinshan-ATLAS) from the Dark Sky Alqueva reserve in Portugal on Oct. 13, 2024 as the comet was displaying an 'anti-tail.' Miguel Claro ...

A NASA and European spacecraft watched as a newly discovered comet dubbed the "Halloween comet" met its demise after its close approach to the Sun. According to NASA, the SOHO spacecraft captured the ...

Copyright 2024 The Associated Press. All Rights Reserved. This image provided by NASA shows Comet Atlas, nicknamed the “Halloween comet”, approaching its closest ...