Washington, June 29: A SpaceX Dragon spacecraft loaded with about 2,600 kgs of research and supplies, including experiments investigating cellular biology, Earth science and Artificial Intelligence (AI), lifted off on a Falcon 9 rocket on Friday from Cape Canaveral Air Force Station in Florida.

This is SpaceX's 15th cargo flight to the space station under NASA's Commercial Resupply Services contract, NASA said in a statement.

The spacecraft's occupant also included a robot named Cimon, short for Crew Interactive Mobile Companion.

The pilot study with Cimon is a technology demonstration project, and an observational study, that aims to obtain the first insights into the effects on crew support by AI, in terms of efficiency and acceptance during long-term missions in space.

Research materials flying inside Dragon's pressurised cargo area also included a cellular biology investigation (Micro-12) to understand how microgravity affects the growth, gene expression and ability of a model bacterium to transfer electrons through its cell membrane along the bacterial nanowires it produces. 

Such bacteria could be used in microbial fuel cells to make electricity from waste organic material.

An Earth science instrument called the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) will provide a new space-based measurement of how plants respond to changes in water availability. This data can help society better manage agricultural water use, the US space agency added.

Dragon is scheduled to depart the station in August and return to Earth with more than 1,724 kgs of research, hardware and crew supplies, NASA said.

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Mumbai (PTI): Aviation watchdog DGCA on Friday eased the flight duty norms by allowing substitution of leaves with a weekly rest period amid massive operational disruptions at IndiGo, according to sources.

As per the revised Flight Duty Time Limitations (FDTL) norms, "no leave shall be substituted for weekly rest", which means that weekly rest period and leaves are to be treated separately. The clause was part of efforts to address fatigue issues among the pilots.

Citing IndiGo flight disruptions, sources told PTI that the Directorate General of Civil Aviation (DGCA) has decided to withdraw the provision 'no leave shall be substituted for weekly rest' from the FDTL norms.

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"In view of the ongoing operational disruptions and representations received from various airlines regarding the need to ensure continuity and stability of operations, it has been considered necessary to review the said provision," DGCA said in a communication dated December 5.

The gaps in planning ahead of the implementation of the revised FDTL, the second phase of which came into force from November 1, have resulted in crew shortage at IndiGo and is one of the key reasons for the current disruptions.