Note: Unlocks after visiting Kadara Port during the quest "Hunting the Archon".
Extra-Planetary Anomaly - Asteroid
Scan the asteroid belt around the star Saubray to find an Asteroid anomaly, which contains a Graphite Deposit.
Extra-Planetary Anomaly - Radiation Trail
Complete the quest "A Trail of Hope" and visit Kadara, after which you’ll get the Email "Please See Me", which starts the quest "Contagion". Scan the Radiation Trail anomaly in the Tecunis system, after which you’ll be able to find another Radiation Trail anomaly in the Zaubray system. Scanning it will earn you 50 Milky Way Research Data points.
This molten, lifeless planet can be scanned to find a Copper Deposit, which you can exploit.
Despite promises of Nickle, Cobalt and Element Zero, the only thing you can find via a scan is a Crevasse, which is nonetheless worth some XP.