Sentinel-1 is the first of the Copernicus Programme satellite constellation conducted by the European Space Agency. This mission was originally composed...

The Sentinels are a group of mutant-hunting robots appearing in American comic books published by Marvel Comics. They are typically depicted as antagonists...

The mission currently operates two satellites, Sentinel-2A and Sentinel-2B; a third satellite, Sentinel-2C, is undergoing testing in preparation for launch...

Look up Sentinel or sentinel in Wiktionary, the free dictionary. Sentinel may refer to: Mount Sentinel, a mountain next to the University of Montana in...

The Stinson L-5 Sentinel is a World War II-era liaison aircraft used by the United States Army Air Forces (USAAF), U.S. Army Ground Forces, U.S. Marine...

The Sun Sentinel (also known as the South Florida Sun Sentinel, known until 2008 as the Sun-Sentinel, and stylized on its masthead as SunSentinel) is the...

Sentinel-1B is a European radar imaging satellite launched on 25 April 2016. It is the second of two original satellites in the Sentinel-1 constellation...

North Sentinel Island is one of the Andaman Islands, an Indian archipelago in the Bay of Bengal which also includes South Sentinel Island. It is home to...

Sentinel-1A is a European radar imaging satellite launched in 2014. It is the first Sentinel-1 satellite launched as part of the European Union's Copernicus...

The Raytheon Sentinel is a retired airborne battlefield and ground surveillance aircraft formerly operated by the Royal Air Force (RAF). While based on...

Last Sentinel (also known as Last Contact in some territories) is a 2023 science fiction thriller film starring Kate Bosworth and Lucien Laviscount. It...

Prime Sentinels are an advanced type of fictional Sentinel appearing in American comic books published by Marvel Comics. They are depicted as a human/machine...

Sentinel is a comic book series published by Marvel Comics as part of the Tsunami imprint. It was written by Sean McKeever and illustrated by UDON. The...

Yosemite Valley, opposite Yosemite Falls. Sentinel Rock lies 0.7 miles (1.1 km) northwest of Sentinel Dome. Sentinel Rock formed when masses of rock split...

development of Sentinel missions 1, 2, 3, 4, 5 and 6 with each Sentinel mission consisting of at least 2 satellites and some, such as Sentinel 1, 2 and 3,...

South Sentinel Island is one of the Andaman Islands in the Bay of Bengal. It is 1.6 km (1 mi) long northeast to southwest and up to 1 km (5⁄8 mi) wide...

also known as the Sentineli and the North Sentinel Islanders, are an indigenous people who inhabit North Sentinel Island in the Bay of Bengal in the northeastern...

Sentinel surveillance is monitoring of rate of occurrence of specific diseases and conditions through a voluntary network of doctors, laboratories and...

The Lockheed Martin RQ-170 Sentinel, nicknamed Wraith, is an American unmanned aerial vehicle (UAV) developed by Lockheed Martin and operated by the United...

The Sentinel-class cutter, also known as the Fast Response Cutter due to its program name, is part of the United States Coast Guard's Deepwater program...

on Terrorism. Operation Freedom's Sentinel is part of the NATO-led Resolute Support Mission, which began on January 1, 2015. OFS had two components: counterterrorism...

Sentinel-2A is a European optical imaging satellite launched in 2015. It is the first Sentinel-2 satellite launched as part of the European Space Agency's...

Sentinel is a giant sequoia located within the Giant Forest Grove of Sequoia National Park, California. It is the 43rd largest giant sequoia in the world...

In computer programming, a sentinel value (also referred to as a flag value, trip value, rogue value, signal value, or dummy data) is a special value in...

The Sentinel. 5 September 2009. Archived from the original on 27 February 2012. Retrieved 1 September 2010. "Stab accused in wheelchair". The Sentinel. 20...

Sentinel-2B is a European optical imaging satellite that was launched on 7 March 2017. It is the second Sentinel-2 satellite launched as part of the European...

The Milwaukee Journal Sentinel is a daily morning broadsheet printed in Milwaukee, Wisconsin, where it is the primary newspaper and also the largest newspaper...

the Sentinel constellation of satellites. Currently, 7 missions are planned, each for a different application. Sentinel-1 (SAR imaging), Sentinel-2 (decameter...

launch. The mission has been replaced by the Sentinel series of satellites. The first of these, Sentinel 1, has taken over the radar duties of Envisat...

The AC1 Sentinel was a cruiser tank designed in Australia in World War II in response to the war in Europe, and to the threat of Japan expanding the war...