File:Red_Giant_Earth_warm.jpg · Wikimedia Commons · See Wikimedia Commons
Wikidata facts
- Instance of
- millennium
- Part of
- Common Era
- Has part
- 40th century
- Followed by
- 5th millennium
- Follows
- 3rd millennium
Show 6 more facts
- start time
- 3001-01-01
- end time
- 4000-12-31
- Commons category
- 4th millennium
- point in time
- 4000-01-01
- different from
- 4th millennium BC
- topic's main category
- Category:4th millennium
via Wikidata · CC0
~5 min read
Encyclopedic overview
Artist's concept of the Earth 5–7.5 billion years from now, when the Sun has become a red giant
While the future cannot be predicted with certainty, present understanding in various scientific fields allows for the prediction of some far-future events, if only in the broadest outline. These fields include astrophysics, which studies how planets and stars form, interact and die; particle physics, which has revealed how matter behaves at the smallest scales; evolutionary biology, which studies how life evolves over time; plate tectonics, which shows how continents shift over millennia; and sociology, which examines how human societies and cultures evolve.
Excerpted from Wikipedia’s “4th millennium” article, available under the CC BY-SA 4.0 licence.