Mr Church said he caught the object on camera at about 8.30pm on March 24 and it was “moving sharpish”.
One person who saw the video replied: “That’s the real deal. Congratulations amazing capture.”
Another person said: “He’d like to come and meet us, but he’s scared he’ll blow our minds.”
A third Twitter user said: “First wave of extraterrestrial from Proxima Centauri checking if we are down yet – but will never take Wales.”
In a bid to explain the UFO, some have suggested it was a Chinese lantern or a drone.