A high altitude balloon is released to launch a saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, at the US. Navy’s Pacific Missile Range Facility in Kauai, Hawaii yesterday. Photograph: Reuters

A helium balloon carrying an experimental saucer-shaped NASA spacecraft floated off a launch tower at the US Navy’s Pacific Missile Range Facility in(...)

John Philip Holland - inventor of the submarine

Take a former Christian Brother with a passion for Jules Verne, the Fenian Brotherhood’s passion for an independent Ireland, and the US navy’s passion(...)

Mohamad Sharil Shaari (36) nephew of Razahan Zamani, a passenger on the missing Malaysian Flight MH370, shows a wedding picture that he took of Razahan and Razahan’s wife Norli Akmar Hamid, on his mobile phone during an interin Kuala Lumpur. Photograph: Reuters

An Australian naval vessel carrying an underwater drone involved in the search for Malaysia Airlines Flight MH370 left port today on its second missio(...)

 Malaysian acting transport minister Hishamuddin Hussein (left) and Chinese transport minister Yang Chuantang (centre) meet with the Australian deputy prime minister Warren Truss (right) in Canberra, Australia, today.  Photograph: EPA

Australia, China and Malaysia pledged today not to give up searching for a Malaysia Airlines jetliner that disappeared almost two months ago, despite (...)

Malaysian defence minister and acting transport minister Hishamuddin Hussin, speaks during a media conference in Kuala Lumpur, Malaysia, today. Photograph: Reuters

Australia and Malaysia vowed today to keep searching for a missing Malaysian plane despite no sign of wreckage after almost seven weeks, and (...)

Operators aboard Australian Defense Vessel Ocean Shield move the US Navy’s Bluefin 21 autonomous underwater vehicle (AUV) into position in the Indian Ocean. The AUV uses side scan sonar and will descend to a depth of between 4,000 and 4,500 meters in the search for the missing Malaysia Airlines Flight 370. Photograph: Peter D Blair/US Navy/Getty Images 1:43

A robotic submarine looking for the lost Malaysian jet has continued its second seabed search as up to 14 planes are taking to the skies for so(...)

Gunner Richard Brown (L) of Transit Security Element looks through binoculars as he stands on lookout with other crew members aboard the Australian Navy ship HMAS Perth as they continue to search for missing Malaysian Airlines flight MH370 . Photograph: Australian Defence Force/Handout via Reuters

A search crew hunting for the missing Malaysian jet has located a new possible underwater signal, an Australian official says. An Aust(...)

 Royal New Zealand Air Force (RNZAF) P-3K2 Orion co-pilot Brett McKenzie looking out the flight deck for missing Malaysian Airlines flight MH370 over the southern Indian Ocean. Photograph: Jason Reed/EPA

The search for missing Malaysia Airlines Flight MH370 could take years, US Navy officials suggested today, as search an(...)

A Royal Australian Air Force AP-3C Orion aircraft grounded as severe weather conditions stops the air search today. Photograph: Jason Reed/Reuters

High winds and icy weather halted the air search today for a Malaysia Airlines passenger jet presumed crashed in the southern Indian Ocean, jus(...)

Marine Patrick (‘Bob) Gallagher from Ballyhaunis Co Mayo who won the Navy Cross for bravery, believed to be highest medal awarded an Irishman on US service in Vietnam, where he was killed in 1967

An online campaign is under way to have a US Navy destroyer named in 2017 after a young Mayoman who was killed in Vietnam in 1967. It would mar(...)