Since its launch, Kepler has helped astronomers confirm the existence of more than 1,000 exoplanets, or planets outside of our solar system. Astronomers now believe that, on average, there may be at least one planet orbiting every star in the sky.
nemÂ·eÂ·sis. n. pl. nemÂ·eÂ·ses (-sÄzâ²). 1. A source of harm or ruin: Uncritical trust is my nemesis. 2. Retributive justice in its execution or outcome: To follow the proposed course of action is to invite nemesis. 3. An opponent that cannot be beaten or overcome. 4. One that inflicts retribution or vengeance. 5.
A meme (/ËmiËm/ meem) is an idea, behavior, or style that spreads from person to person within a culture.awkins likened the process by which memes survive and change through the evolution of culture to the natural selection of genes in biological evolution. Dawkins defined the meme as a unit of cultural transmission, or a unit of imitation and replication, but later definitions would vary.