Junction

Junctions are solo missions that allow players to progress through the Star Chart.

Mechanics
Junctions consists of a small, circular room, with a specter kneeling in the center. Each Junction is accompanied by a series of specific tasks. Completing these tasks is required to challenge a Junction's specter for control of the connected Solar Rail, which unlocks the next celestial body.

In addition to star chart progression, completing a Junction grants 1,000 Mastery and several miscellaneous rewards (typically weapon blueprints and/or quests). Junction rewards can only be claimed once.

Junctions

 * -| Mercury =
 * -| Venus =
 * -| Mars =
 * -| Phobos =
 * -| Ceres =
 * -| Jupiter =
 * -| Europa =
 * -| Saturn =
 * -| Uranus =
 * -| Neptune =
 * -| Pluto =
 * -| Sedna =
 * -| Eris =

Tips

 * Using crowd control abilities that stun or freeze enemies (e.g. Volt's Discharge and Harrow's Condemn) will leave Specters completely vulnerable to the player's attacks, making Junctions relatively trivial.
 * As the level of the Specters increase so do their firepower, potentially threatening and, in some extreme cases, killing the player in a matter of seconds. It is recommended to bring a frame with either the ability to protect themselves from damage (e.g. Volt's Electric Shield or Valkyr's Hysteria), the ability to heal themselves (e.g. Trinity's Blessing), or that can decently tank damage (e.g. Rhino or Inaros).
 * Using Frost's Snow Globe ability knocks Specters back and dealing huge amounts of damage. 2 Snow Globes should be enough to kill.

Trivia

 * Each specter is based on the Warframe whose components drop from the next location's boss, with the exception of Volt on Mercury, Frost on Mars, Trinity on Ceres, and Excalibur on Pluto.
 * Volt is the specter of the Mercury Junction because Captain Vor doesn't drop any Warframe Parts blueprints.
 * The latter three were the result of a reshuffling of drop locations for each frame introduced in.
 * Players retained any star chart progress made prior to . However, Junctions themselves still needed to be completed to gain their rewards. Furthermore, Junction tasks only counted progress made after the update, with the exception of completed quests.
 * Junctions were inspired by Hyper Light Drifter.

Bugs

 * The large window in the Junctions is not solid, allowing players to knock the Specter out into space with the appropriate abilities and weapons.
 * The Sedna Junction may not allow the player to enter even when all four requirements have been met or the junction has already been completed.
 * If a Junction is already completed and the player returns to scan the Specter for a codex entry, the Specter must be scanned and killed, then the player must return a second time and repeat this process for the codex entry to show up.
 * This bug can be bypassed by exiting the junction from the Esc. menu.