Earth's orbit has been perturbed, causing the planet to slowly move towards the sun for the past 130 years. As a result, its axis has tilted and its rotation around itself has decelerated, making days last longer.
The phenomenon was originally named Terrestrial Orbit Lapse, but is widely called the Lapse.
Scientists estimate that in 52 years the Earth will be so close to the Sun that life will no longer be sustainable.