What's the highest energy a photon can have? And in Q&A plus, what realistic scifi is worth watching? 🔴 [Q&A+] No ads. For FREEhttps://www.patreon.com/universetoday00:00 Start00:00 [Chris Nelsynels] Realistic scifi recommendations00:26 [Marz Chart] Is oxygen flammable on Titan? Subscribe for FREE: https://universetoday.com/newsletter🎧 PODCASTSUniverse Today: https://universetoday.fireside.fm/Astronomy Cast: http://www.astronomycast.com/📩 CONTACT FRASER[email protected]⚖️ LICENSECreative Commons Attribution 4.0 International (CC BY 4.0)