In this image from NASA's Spitzer Space Telescope, "cometary knots" on the Helix Nebula show blue-green heads caused by excitation of their molecular material from shocks or ultraviolet radiation.

36,279 people played the daily Crossword recently. Can you solve it faster than others?36,279 people played the daily Crossword recently. Can you solve it faster than others? 'We're disappointed ...

ProTip! Filter pull requests by the default branch with base:master.

Illustration of a planet being torn apart by tidal forces from a white dwarf. (Credit: CXC/SAO/M.Weiss) ...

Like his sister, Lady Louise Windsor, James, Earl of Wessex has grown up largely out of the spotlight, although he joins his parents, the Duke and Duchess of Edinburgh (formerly the Earl and Countess ...

Lenovo ThinkPad T495s is a Windows 10 Professional laptop with a 14.00-inch display. it comes with 16GB of RAM. The Lenovo ThinkPad T495s packs 1TB of SSD storage. Graphics are powered by AMD Radeon ...

HP LaserJet Pro MFP M128FN Laser Multi Function Monochrome Printer (Black) ₹ 21,938 ...