A time stream was a type of temporal anomaly which, if collided with in a spacecraft under a special set of circumstances, can cause alterations to history.

In 2372, Harry Kim intersected with a time stream while piloting the shuttlecraft Drake in the Delta Quadrant. This had the effect of changing history in that Harry was never assigned to the USS Voyager and instead had a position at Starfleet Headquarters in San Francisco. While in this alternate timeline, Harry met an alien from a temporal inversion fold in the spacetime matrix, who had taken the form of a Human named Cosimo. Cosimo detailed to Harry the events which led to the creation of the alternate timeline, and informed him that the time stream, which wove throughout the galaxy like a thread, could be intersected again, possibly repairing the damage to the timeline. With the help of the alternate timeline-counterpart of Tom Paris, Harry was able to locate and fly into the time stream, recreating the exact conditions which resulted in the change to history in the first place, and undoing the alterations to the timeline. (VOY: "Non Sequitur")

Aboard the NX-class starship Enterprise, Daniels used the phrase "time stream" to refer to the fluctuations in the timeline that resulted in the alternate timeline that was created when the Temporal Cold War turned into an all-out conflict. (ENT: "Storm Front")

Timeline resetEdit

Several images of historical importance were seen when the timeline reset. (ENT: "Storm Front, Part II")

Images seen during timeline reset

A fish Lightning A fertilized ovum A landscape on Earth A dinosaur A landscape on Earth Stonehenge A cave painting of a horse from Lascaux A prehistoric Human The pyramids of Giza Humans hunting with spears Moais on Easter Island Roman chariots racing An Egyptian wall painting A Roman carriage A depiction of the Capitoline Wolf suckling Romulus and Remus. A Human riding a horse A medieval joust A Human being burned at the stake in the Middle Ages A scene from the Middle Ages The Vitruvian Man by Leonardo da Vinci A sailing ship firing Men signing a document A man signing a document Ludwig van Beethoven People working in the field A sailing ship Betsy Ross sewing the US flag Several people George Washington crossing the Delaware River A herd of buffalo Native American tepees A canoe A ballroom dance Abraham Lincoln The American Civil War An oil well with a gusher Thomas Edison A locomotive An early automobile The Wright Flyer Theodore Roosevelt Vladimir Lenin Woodrow Wilson inspecting the troops World War I Heinkel He 111s Winston Churchill Adolf Hitler Franklin D. Roosevelt Parachutes during World War II The "Fat Man" atomic bomb Members of the Ku Klux Klan A Douglas DC-3 A family sitting in front of a television set John F. & Jacqueline Kennedy Fidel Castro Banners from the Civil Rights Movement A Saturn V rocket Man's first landing on the moon A man working on a computer Richard M. Nixon Mao Zedong The peace symbol Leonid Brezhnev Jimmy Carter The Concorde A banner with the likeness of Ruhollah Khomeini Ronald Reagan Cooling towers at the Three Mile Island nuclear plant Margaret Thatcher A Space shuttle lift-off Tanks at Tiananmen Square Mayall Telescope at Kitt Peak National Observatory George H. W. Bush & Mikhail Gorbachev Strands of DNA Norman Schwarzkopf Saddam Hussein A laptop computer A compact disk being placed in a computer The Rockwell X-30 Hillary Rodham Clinton and William J. Clinton George W. Bush & Tony Blair Nelson Mandela The World Trade Center attack Toyota Fine N Osama Bin Laden The International Space Station A robot A futuristic city Enterprise NX-01 A futuristic bridge The Xindi probe prototype Jonathan Archer aboard the Xindi probe The Xindi probe explodes near Earth Add an image to this galleryAdd an image to this gallery