Elon Musk was set to follow up today with another launch of a Falcon 9 rocket. On board would have been a Spanish PAZ satellite and two demonstration ones, referred to as Microsat-2a and Microsat-2b. But the internet satellite mission has been postponed for three days so additional inspections can be made. The space agency tweeted yesterday: "Team at Vandenberg is taking additional time to perform final checkouts of upgraded fairing. Payload and vehicle remain healthy. Due to mission requirements, now targeting February 21 launch of PAZ."

This is the second time the satellite launch has been rescheduled, after the initial date on Saturday was moved to Sunday. Lift off was due to take place from the Vandenberg Air Force Base in California at 9am EST (2pm GMT) today. When will the launch take place? What is the SpaceX launch schedule now? The new mission launch of the PAZ expedition has been rescheduled for Wednesday, February 21. The time is yet to be confirmed.

Falcon 9 SpaceX launch: Incredible pictures Sat, December 23, 2017 Take a look through the stunning pictures of the Falcon 9 SpaceX launch. Play slideshow EPA/@alias_amanada/PA 1 of 11

REUTERS SpaceX Tesla Roadster and Starman in space

What is the SpaceX internet launch about? SpaceX CEO Elon Musk wants to improve the capacity and quality of internet coverage for users worldwide by placing 4.425 satellites (LEO Constellations) into orbit. He will combine this with a further 7,518 satellites at a low-Earth-orbit altitude (VLEO Constellations) to provide the “SpaceX System". In its application to the Federal Communications Commissions (FCC), SpaceX stated: “When combined into a single, coordinated system (the “SpaceX System”), the LEO and VLEO Constellations would provide both diverse geographic coverage and the capacity to support a wide range of broadband and communications services for residential, commercial, institutional, governmental and professional users in the United States and globally.” This was approved on Wednesday. FCC Chairman Ajit Pai said: “Satellite technology can help reach Americans who live in rural or hard-to-serve places where fibre optic cables and cell towers do not reach.”

GETTY/REUTERS SpaceX launch: The internet satellites Falcon 9 rocket launch is delayed until February 21

GETTY SpaceX founder and CEO Elon Musk wants to put people on Mars