Baby's particles



The Baby's particles were the result of the Baby's death as depicted in Metroid: Other M. After it explodes above Samus, it becomes a rain of particles that fall over her like snow.

They serve as a possible explanation for how she gets the Hyper Beam, as Samus catches one particular particle in her hand, thus it is possible that the energy from the Laser Brain Attack was stored in the particle and it filled her Power Suit with the energy, and, combined with her empowerment over the Baby's death, gave Samus the Hyper Beam.

Samus speaks the above line after completing the training sequence at the beginning of Metroid: Other M, due to the fact that no more particles are still attached to her suit. The researchers behind the Bottle Ship extracted them, and along with a piece of cell structure, used it to create all the Metroids onboard the Bottle Ship, and later on the Biologic Space Laboratories research station in Metroid Fusion.

Trivia

 * No particles were seen in the original version of Super Metroid; instead, the baby fell toward Samus while constantly exploding, until she began to flash and stand up, ready to defeat Mother Brain.