- Science
- By Laura Sinpetru
- October 18th, 2013
Light Can Be Tied into Knots, Physicists Say
Scientists say laser beams could be used to create such light knots
- Physics / Chemistry
- By Tudor Vieru
- January 18th, 2010
'Light Knots' Created in the Lab
Experts use holograms to get the job done
- Space
- By Tudor Vieru
- July 6th, 2009
Helix Nebula Reveals Impressive Firework Display
The nebula is designated as NGC 7293