THERE'S been lots of talk about UFOs recently but you may have also seen the term 'UAP' cropping up more often.
UAP is actually a new term for UFO that is supposed to have less of a stigma attached.
What does UAP mean?
UAP stands for 'Unidentified Aerial Phenomena'.
UFO stands for 'Unidentified Flying Object'
Many experts in the field found UFO was being ridiculed and reports were not being taken seriously.
It's thought UAP is a more professional term and it's becoming increasingly more common as the US begins to seriously discuss UFO/UAP sightings.
The United States Office of Naval Intelligence now has a Unidentified Aerial Phenomena Task Force (UAPTF) program.
It collects reported sightings of mysterious flying objects.
UAP doesn't necessarily have to refer to a suspected 'alien craft' sighting.
Some people think using the term UAP will get sightings taken more seriously.
It's thought over 90% of UFO sightings have a reasonable explanation
However, recent footage released by the pentagon of strange flying objects is still baffling experts.
Fermi Paradox – what is it?
Here's what you need to know...
APOCALYPSE HOW?Nasa's Venus probes 'to reveal how life on Earth will END' in eerie mission
WAT-ER DISCOVERY!Mystery of 1965 Folsom Lake plane crash solved? Eerie wreck found
SMOKES OUT BUGBritish-made 'Covid alarm' can detect disease in crowded room within 15mins
LOOK TO THE SKYSolar eclipse visible to millions around the world TODAY - live updates
PHONE HOME?Google Earth user discovers giant 60ft 'metallic UFO' submerged in Antarctica
LOST CITIESFrom Japanese pyramids to a Welsh underwater kingdom - the amazing lost cities
In other space news, the European Space Agency has revealed it will be sending a probe called EnVision to study the planet Venus.
Scientist Brian Cox believes there could be 200 billion alien civilisations in the universe.
And, the world’s first reality show filmed in space will follow a contestant on a 10-day trip to the ISS in 2023.
We pay for your stories! Do you have a story for The Sun Online Tech & Science team? Email us at [email protected]