The immediate effects:
* Everything would fly off the planet. You, me, the air, the oceans, buildings, trees - anything not firmly anchored to the Earth's surface would instantly shoot upwards at a high velocity. Imagine the chaos of a massive, uncontrolled launch into space.
* The atmosphere would vanish. The air, no longer held down by gravity, would escape into space. This would leave us suffocating in a vacuum.
* The Earth itself would likely disintegrate. Without the inward pull of gravity, the Earth's own internal pressure would cause it to explode outwards. Think of a balloon suddenly losing its pressure.
* The solar system would collapse. The planets, no longer held in orbit by the sun's gravity, would fly off in random directions.
The long-term effects:
* Stars and galaxies would cease to exist. Without gravity, there would be no way for matter to clump together and form stars, planets, and galaxies. The universe would be a vast, empty void.
The bottom line:
The disappearance of gravity would be an instant and complete end to life as we know it. It would not be a "slow fade-out," but a sudden, chaotic, and devastating event.
Important Note: This is a hypothetical scenario. The complete disappearance of gravity is not something that scientists currently believe is possible. Gravity is a fundamental force of nature, and while we don't fully understand it, it's not something that can be just "turned off."