ESA Data Ontology
type: ConceptScheme
type: Ontology

isLeafConcept
definition: The :isLeafConcept property marks whether a SKOS concept is a leaf SKOS concept.

XMM-Newton
type: Concept
modified: 2023-05-08T18:00:00+00:00
broader: Astronomy
definition: The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
in scheme: ESA Data Ontology
is leaf concept: true

Astronomy
type: Concept
type: NamedIndividual
narrower: XMM-Newton
notation: missionsAstroSCI