Behold, directly overhead, a certain strange star was suddenly seen...
Amazed, and as if astonished and stupefied, I stood still.

— Tycho Brahe

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Updated: 39 min 32 sec ago

New sea-level monitoring satellite goes live

2 hours 10 min ago

Following liftoff last November and more than six months spent carefully calibrating the most advanced mission dedicated to measuring sea-level rise, Copernicus Sentinel-6 Michael Freilich is now operational – meaning that its data are available to climate researchers, ocean-weather forecasts and other data users.

Categories: Astronomy

Stark reality of Californian drought from space

8 hours 10 min ago
Image: Stark reality of Californian drought from space
Categories: Astronomy

Take part in ESA’s Space App Camp

9 hours 20 min ago

ESA is inviting up to 25 committed mobile app developers and specialists in artificial and machine learning related to observing Earth from space to join this year’s Space App Camp, which will be a virtual event over eight weeks, from 20 July to 20 September.

Categories: Astronomy

Week in images: 14 - 18 June 2021

Fri, 06/18/2021 - 4:44am

Week in images: 14 - 18 June 2021

Discover our week through the lens

Categories: Astronomy

ESA-led space propulsion test facility passed to UK owner

Fri, 06/18/2021 - 4:16am

The UK’s new National Space Propulsion Facility has been declared open. ESA oversaw the design, assembly and commissioning of the facility – equipped to test-fire the most powerful classes of rocket engines used aboard spacecraft.

ESA’s General Support Technology Programme (GSTP) has invested around €4,500 000 in the design, development and building of the National Space Propulsion Facility, in collaboration with the UK Space Agency and UK industrial partners including rocket manufacturer and facility contractor Nammo UK

Categories: Astronomy

Earth from Space: Tana River

Fri, 06/18/2021 - 4:00am

The Tana River, Kenya’s longest river, is featured in this false-colour image captured by the Copernicus Sentinel-2 mission.

Categories: Astronomy

Last chance for aspiring astronauts

Thu, 06/17/2021 - 3:10am

The deadline to submit an application for ESA’s astronaut selection is midnight CEST Friday 18 June, giving applicants just two more days to apply.

Categories: Astronomy

Space sustainability rating to shine light on debris problem

Thu, 06/17/2021 - 1:59am

There’s a problem brewing overhead. Invisible to the naked eye and relatively unheard of, it threatens our future in space – space debris.

A new ‘Space Sustainability Rating’ is currently in development that will shed light on the problem, scoring space operators on the sustainability of their missions, increasing the transparency of their contributions to protecting the space environment and encouraging and recognising responsible behaviour.

Categories: Astronomy

Space embrace

Tue, 06/15/2021 - 6:33am
Image: André Kuipers with a European Robotic Arm model on the Space Station
Categories: Astronomy

Ultra-cool test of Jupiter instrument

Tue, 06/15/2021 - 5:00am
Video: 00:03:38

An instrument destined for Jupiter orbit undergoes eight days of cryogenic radio-frequency testing using a new test facility at ESA’s ESTEC technical centre in the Netherlands. The Submillimetre Wave Instrument of ESA’s Juice mission will survey the churning atmosphere of Jupiter and the scanty atmospheres of its Galilean moons.

Testing took place in ESA’s custom-built Low-temperature Near-field Terahertz chamber, or Lorentz. The first chamber of its kind, the 2.8-m diameter Lorentz chamber can perform high-frequency radio-frequency testing in realistic space conditions, combining space-quality vacuum with ultra-low temperatures.

Categories: Astronomy

Drive to destruction

Tue, 06/15/2021 - 3:06am
Image: Drive to destruction
Categories: Astronomy

Juice moves into Large Space Simulator

Mon, 06/14/2021 - 9:00am

The Jupiter Icy Moons Explorer has moved into the ‘Large Space Simulator’ at ESA’s test centre, ready for grueling environmental tests at a range of temperatures.

Categories: Astronomy

Satellites reveal cause of Chamoli disaster

Mon, 06/14/2021 - 5:30am

A new study using satellite evidence confirms that a rock and ice avalanche caused the Chamoli disaster in India earlier this year. The resulting mud and debris flood led to massive destruction downstream.

Categories: Astronomy

ESA’s digital celebration of space safety and Asteroid Day

Mon, 06/14/2021 - 4:30am

Register now to join us on 28 June, 18:00-20:00 CEST - seats limited.

Categories: Astronomy

ESA helps Europe boost secure connectivity

Mon, 06/14/2021 - 4:00am

As today’s world becomes increasingly connected, ESA is partnering with the European Commission to keep communications secure.

Categories: Astronomy

Week in images: 07 - 11 June 2021

Fri, 06/11/2021 - 9:36am

Week in images: 07 - 11 June 2021

Discover our week through the lens

Categories: Astronomy

Voyage 2050 sets sail: ESA chooses future science mission themes

Fri, 06/11/2021 - 4:30am

ESA’s large-class science missions for the timeframe 2035-2050 will focus on moons of the giant Solar System planets, temperate exoplanets or the galactic ecosystem, and new physical probes of the early Universe.

Categories: Astronomy

Earth from Space: Chongqing, China

Fri, 06/11/2021 - 4:00am

Chongqing, the largest municipality in China, is featured in this Copernicus Sentinel-2 image.

Categories: Astronomy

Four mission ideas to compete for Earth Explorer 11

Thu, 06/10/2021 - 6:20am

As part of ESA’s commitment to develop and build satellite missions that push the boundaries of satellite technology and Earth science, four new mission ideas – Cairt, Nitrosat, Seastar and Wivern – have been selected to enter pre-feasibility study and compete to be the eleventh Earth Explorer mission.

Categories: Astronomy

Forest degradation primary driver of carbon loss in the Brazilian Amazon

Thu, 06/10/2021 - 5:00am

Forest degradation has become the largest process driving carbon loss in the Brazilian Amazon, according to a recent study using ESA satellite data.

Categories: Astronomy