Memory Alpha
Memory Alpha
Multiple realities
(covers information from several alternate timelines)
Hypergiant flare

A solar flare erupting from the surface of a hypergiant

USS Enterprise skims near Sol

The USS Enterprise passing a solar flare

Bringloid, remastered

A star with solar flare activity

IKS Rotarran escapes Monac solar flare

A solar flare approaches the Monac shipyard

A solar flare (also known as stellar flare, sun flare or solar plasma eruption) is an eruption in a star's atmosphere, that accelerates plasma into space at great speeds. By the 24th century, various techniques existed to trigger solar flares, including particle beams and electromagnetic pulses. The concentration of cosmic rays that can accompany a solar flare can be measured on the Ritter scale.

The electromagnetic pulse which accompanies a solar flare could damage systems, wreck havoc on computers, and render shields useless.

The United Federation of Planets had a categorization system for solar flares in the 24th century. One such categorization was "magnitude twelve, class B." (TNG: "Relics")

After Quark, Rom and Nog were transported back in time to 1947 Earth, theorized that Rom solar flares could be interfering with their universal translators. (DS9: "Little Green Men")

In 2255 of the alternate reality, military shuttles were sensitive to solar flames and one cropping up might cause the occupants to be boiled in their seats, at least if a panicking Leonard McCoy was to be believed. (Star Trek)

In 2266, a solar flare, accompanied by high levels of cosmic rays, was discharged by the sun in the Minarian star system. The USS Enterprise was forced to leave orbit around one of the Minarian planets to protect its systems from the solar flare. Meanwhile, a landing party from the Enterprise – consisting of Kirk, Spock, and McCoy – remained on the planet's surface, judging that the planet's atmosphere would shield them from the flare's effects. (TOS: "The Empath")

In 2353, a Kohl settlement was rendered temporarily uninhabitable by a solar flare. (VOY: "The Thaw")

During a scan of Aldean DNA, Doctor Beverly Crusher was able to confirm that solar flare variations were not responsible for the Aldeans becoming infertile. (TNG: "When The Bough Breaks")

In 2364, Lieutenant, j.g. Geordi La Forge told Captain Jean-Luc Picard that the solar flare activity on a star the USS Enterprise-D was studying was increasing. The shields were weakened by the flare activity, but managed to hold. (TNG: "Symbiosis")

In 2365, the Bringloidi civilization was threatened by solar flares in the Ficus sector. (TNG: "Up The Long Ladder")

During a battle in the Klingon Civil War, Kurn destroyed two pursuing Birds-of-Prey by triggering a solar flare. (TNG: "Redemption II")

While investigating a Dyson sphere, the USS Enterprise-D was pulled inside the sphere and observed the unstable star within expelling a solar flare, which Data indicated as magnitude twelve, class B. (TNG: "Relics")

As evidenced by the first draft script of "Relics", the threat posed by a solar flare was originally to have instead been the Dyson sphere breaking apart and collapsing in on the Enterprise-D.

In 2371, Grand Nagus Zek talked to a representative of a planet which had been affected by solar flares, damaging its agriculture. The Ferengi leader agreed to provide the planet with Kohlanese barley. (DS9: "Prophet Motive")

In 2372, intense solar flare activity caused electrodynamic turbulence throughout the Drayan star system. (VOY: "Innocence")

In 2373, Lieutenant B'Elanna Torres listed a solar flare as one of many factors that could interfere with USS Voyager's attempt to bring the Barzan wormhole to them with verterons. (VOY: "False Profits")

In 2375, during the Dominion War, the Klingon Bird-of-Prey IKS Rotarran triggered a solar flare in the Monac sun. The flare destroyed the Monac shipyard. (DS9: "Shadows and Symbols")

In 2378, a solar flare disrupted a transmission from Earth to the USS Voyager in the Delta Quadrant, cutting a message from John and Mary Kim to their son Harry short. (VOY: "Author, Author")

In 2381, the Lapeerian sun generated an unpredicted solar flare that struck and shattered an unstable planetoid in the system. (LD: "First First Contact")

In 3189, the planet Reilling VII deployed shields to protect itself from solar flares. That year, it requested additional shielding from Federation Headquarters, which promptly sent a ship to assist them. (DIS: "Scavengers")

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