The oldest known astrolabe was used on one of Vasco da Gama’s ships

ScienceNews - Fri 22 Mar 19

A navigational device for taking altitudes at sea was found in a Portuguese shipwreck in the Arabian Sea and dates back to 1496.

Mariners’ tool certified as world’s oldest

Cosmos Magazine - Mon 18 Mar 19

A relic of Vasco da Gama’s journeys enters the record books. Andrew Masterson reports.

Earliest known Mariner's Astrolabe research published today to go in Guinness Book of Records

Phys.org - Mon 18 Mar 19

Guinness World Records have independently certified an astrolabe excavated from the wreck site of a Portuguese Armada Ship that was part of Vasco da Gama's second voyage to India in 1502-1503 ...

Earliest known Mariner's Astrolabe research, ScienceDaily - Mon 18 Mar 19
Earliest known Mariner's Astrolabe research published today to go in Guinness Book of Records, Eurekalert - Sun 17 Mar 19

Mariner's Astrolabe from 1503 Shipwreck Is World's Oldest

SPACE.com - Sat 23 Mar 19

An astrolabe found at a shipwreck site in Oman is the oldest one ever discovered.

Mariner's Astrolabe From 1503 Shipwreck Is World's Oldest , Livescience - Wed 20 Mar 19

New Analysis Confirms Oldest Mariner's Astrolabe Ever Found

Gizmodo - Fri 22 Mar 19

Scientists have confirmed that a gunmetal disk uncovered off the coast of Oman is the oldest known mariner’s astrolabe, according to a new study.Read more...

Mariner's Astrolabe from 1503 shipwreck is world's oldest

FOXNews - Thu 21 Mar 19

A rare navigational tool has snagged a Guinness World Record as the oldest mariner's astrolabe.

Mariner’s astrolabe discovered in wreckage of 15th century Portuguese ship is the oldest ever found

Daily Mail - Mon 18 Mar 19

With an independent confirmation from the Guinness Book of World Records, there's a officially a new title-holder for the world's oldest ever recovered astrolabe.

Earliest Known Mariner’s Astrolabe Earns Guinness World Record

Geek.com - Mon 18 Mar 19

Guinness World Records certified a gunmetal disc excavated from the wreck site of a Portuguese Armada ship as the earliest known example of a mariner’s astrolabe. Believed to have been ...

This medieval astrolabe is officially world’s oldest known such instrument

Ars Technica - Sun 17 Mar 19

Mariners used the instruments to navigate at sea using the stars.

Earliest known mariner's astrolabe described in new study

UPI - Mon 18 Mar 19

Guinness World Records has verified that a mariner's astrolabe recovered from the wreckage of a sunken Portuguese ship is indeed the earliest of its kind.