Does the vacuum have mass?

Now that is a darn good question! In classical physics, the vacuum is the absence of mass-energy, so no, it does not have mass. The very definition of the classical vacuum is that its “stress-e…   Top stories for {NAME} [Quora](   [Does the vacuum have mass?]( Viktor T. Toth, IT pro, part-time physicist • [Answered February 3, 2021]( [Now that is a darn good question! In classical physics, the vacuum is the absence of mass-energy, so no, it does not have mass. The very definition of the classical vacuum i... Read more » [View] 266.5K [Upvote] 1.3K](   [What happened to Tracy Chapman?]( Jon Mixon, Probably listening to music while I'm answering this question. • [Answered May 5]( [Question: What happened to Tracy Chapman? Nothing happened to her. She’s still alive as of 2022. What happened to her career?... 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Read more » [View] 47.8K [Upvote] 799 [Comment] 12](   [Did John Lennon 'give up' a bit, after Paul McCartney came up with “Yesterday”, “Eleanor Rigby”, etc and seemed to leave him behind as a songwriter?]( Rick Bonner, A lifetime of study and analysis of the Beatles. • [Updated May 18]( [Paul.McCartney depicts John Lennon as a sweet, insecure and lazy guy that lay in his bad all day. Here is a sample of what that sweet lazy guy did with the Beatles. Both Pau... Read more » [View] 150K [Upvote] 191 [Comment] 51](   [What scientific question has become more difficult to answer as more progress is made on it?]( Ken Saladin, Former professor of histology (microscopic anatomy) • [Answered May 30]( [This is probably more simple and mundane than you had in mind, but I’d say a question that’s become harder to answer because of expanding knowledge is: What is the endocrin... Read more » [View] 425.5K [Upvote] 1.9K [Comment] 49](   [Should I switch from Spotify to Apple Music?]( Kosta, been using Macs for 22 years, 12 years experience working for and with Apple • [Answered June 8, 2015]( [Apple's big selling point for Apple Music is curation. Most music streaming services use algorithms to curation music and it's hit or miss. With Apple Music they are using ... Read more » [View] 88.1K [Upvote] 208 [Comment] 12]( [Read more in your feed]( Never miss a story. Designed for readers on the go.   [Download on the App Store]( it on Google Play](   Missing out on Quora emails? Be sure to add us to your primary inbox. This email was sent by Quora (605 Castro Street, Mountain View, CA 94041). If you don't want to receive this type of email in the future, please [unsubscribe](.