A NASA mission that purposely crashed a satellite into an asteroid this week was the first test of planetary defense technology. Now scientists are working to figure out how successful it really was. WSJ science reporter Aylin Woodward joins host Zoe Thomas to discuss the mission and what comes next. https://www.wsj.com/articles/nasas-dart-spacecraft-to-smash-into-asteroid-in-planetary-defense-test-11664165948?st=0o5zjzl00luhl5d&reflink=desktopwebshare_permalink Photo: NASA / Johns Hopkins / Zuma Press For more episodes of WSJ’s Tech News Briefing: https://link.chtbl.com/WSJTechNewsBriefing Visit the WSJ Podcast Center: https://on.wsj.com/3zTcL89 More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com/ Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #DART #NASA #WSJ