Ariane 5 ECA+ | James Webb Space Telescope (JWST)
Launch Successful
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Launch Window
Dec. 25, 2021, 12:20 p.m. - Dec. 25, 2021, 12:52 p.m.
Dec. 25, 2021, 12:20 p.m. - Dec. 25, 2021, 12:52 p.m.
The James Webb Space Telescope is a space telescope developed by NASA, ESA and CSA to succeed the Hubble Space Telescope as NASA's flagship astrophysics mission. Its primary mirror, the Optical Telescope Element, is composed of 18 hexagonal mirror segments which combine to create a 6.5 m diameter mirror, considerably larger than Hubble's 2.4 m mirror. This will allow JWST to provide improved infrared resolution and sensitivity over Hubble, and will enable a broad range of investigations across the fields of astronomy and cosmology, including observing some of the most distant events and objects in the universe, such as the formation of the first galaxies.
Successful launch confirmed
Delaying by 24 hours due to adverse weather forecast
Go for launch.
New NET date.
New launch date confirmed after additional spacecraft testing.
Ariane 5 ECA+ is a variant of the Ariane 5 heavy-lift vehicle, with a taller ECA-D upper stage.
ArianeGroup (formerly Airbus Safran Launchers) is an aerospace company based in France. A joint venture between Airbus and Safran, the company was founded in 2015 and is headquartered in Issy-les-Moulineaux. It consists of three core arms: aerospace, defence and security.
INFO WIKI
This image released on June 30, 2025, combines data from NASA’s James Webb Space Telescope and NASA’s Chandra X-ray Observatory to visualize dark matter. Researchers used Webb’s observations to carefully measure the mass of the galaxy clus…
Tokyo, Japan (SPX) Nov 15, 2025 Researchers led by the Department of Astronomy at Tsinghua University have identified a galaxy labeled CR3, which shows evidence of containing stars from the earliest phase of the universe. The team use…
Earlier this year, the new Vera C. Rubin Observatory in Chile officially began scientific operations,… The post Wide-field surveys versus precise infrared observations: how Rubin compares to JWST appeared first on NASASpaceFlight.com.
NASA’s James Webb Space Telescope has provided the first direct measurements of the chemical and physical properties of a potential moon-forming disk encircling a large exoplanet. The carbon-rich disk surrounding the world called CT Cha b,…
Shenzhou 22 (Chinese: 神舟二十二号) will be the 22nd flight of the Shenzhou program. The spacecraft will be launched without crew to replace Shenzhou 20 th…
A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Note: Payload and customer identities were not publicly announced. 3rd of the BlackSky Gen-3 high resolution Earth-imaging satellites.
3 Chinese satellites described as for “Space Environment Measurements” purposes. Actual usage not known.
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Sub-orbital launch under Rocket Lab’s Hypersonic Accelerator Suborbital Test Electron (HASTE) program. This mission was lead by MDA and deployed a…
The Sentinel-6 Michael Freilich (launched November 2020) and Sentinel-6B make up the Sentinel-6 mission, also known as Jason Continuity of Service (…
