With Facebook positioning its VR-based Oculus devices primarily as gaming machines, McCauley does not believe there is much of a market for the device.

Revenue from Apple App Store and Google Play reached $39.7 billion during the first half of this year.

India's aviation regulator has initiated an investigation into a series of safety lapses at low-cost airline SpiceJet, which has resulted in the death of a technician and caused planes to veer off runways, people intimately aware of the matter said.

Richard Branson's Virgin Orbit on Wednesday released a rocket from the wing of a modified Boeing 747 jetliner in mid-air in a key test of its high-altitude launch system for satellites, the company said. In the penultimate mission before Virgin Orbit offers commercial satellite launch services, the 70-foot (21.34 m) LauncherOne rocket cleanly separated from the jetliner at roughly 35,000 feet, the company said. The rocket, loaded with water and antifreeze to simulate the weight of fuel, crashed as planned into the Mojave Desert as the jetliner, nicknamed Cosmic Girl, continued on its flight path.