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15/06B-52 crashes after takeoff at Edwards AFB, California. There were no survivors among the 8 crew members
15/06Ukrainian F-16 fighters set for IRIS-T missile integration
14/0612 dead following New-Zealand-built turboprop skydiving Butler P-750 plane crash in Missouri
12/06U.S. Air Force begins combat-focused testing of B-21 Raider
11/06Japan’s H3 rocket launched on its 1st flight since a failure in December, placing 6 smallsats in orbit
11/06Long March 5 launches classified satellite, Zhuque-2E lofts direct-to-device test sats
10/06Rafael unveils Hunter Eagle interceptor for counter-drone swarm defence at ILA 2026
10/06Airbus reveals uncrewed U145 at ILA Berlin Airshow
08/06France and Germany abandon joint project to build the Future Combat Air System (FCAS)
06/06Azorra aircraft lessor aircraft places additionalfirm order for 15 Embraer E195-E2
29/05New Glenn rocket explodes on Cape Kennedy pad
28/05Blue Origin’s New Glenn rocket exploded during a static-fire test
24/05Shenzhou-23 crew arrives at Tiangong as China maps path to 2030 lunar landing
15/05President Trump says China’s Xi commits to acquiring 200 Boeing jets
15/05Space X launches CRS-34 cargo mission to the ISS
15/06B-52 crashes after takeoff at Edwards AFB, California. There were no survivors among the 8 crew members
15/06Ukrainian F-16 fighters set for IRIS-T missile integration
14/0612 dead following New-Zealand-built turboprop skydiving Butler P-750 plane crash in Missouri
12/06U.S. Air Force begins combat-focused testing of B-21 Raider
11/06Japan’s H3 rocket launched on its 1st flight since a failure in December, placing 6 smallsats in orbit
11/06Long March 5 launches classified satellite, Zhuque-2E lofts direct-to-device test sats
10/06Rafael unveils Hunter Eagle interceptor for counter-drone swarm defence at ILA 2026
10/06Airbus reveals uncrewed U145 at ILA Berlin Airshow
08/06France and Germany abandon joint project to build the Future Combat Air System (FCAS)
06/06Azorra aircraft lessor aircraft places additionalfirm order for 15 Embraer E195-E2
29/05New Glenn rocket explodes on Cape Kennedy pad
28/05Blue Origin’s New Glenn rocket exploded during a static-fire test
24/05Shenzhou-23 crew arrives at Tiangong as China maps path to 2030 lunar landing
15/05President Trump says China’s Xi commits to acquiring 200 Boeing jets
15/05Space X launches CRS-34 cargo mission to the ISS
15/06B-52 crashes after takeoff at Edwards AFB, California. There were no survivors among the 8 crew members
15/06Ukrainian F-16 fighters set for IRIS-T missile integration
14/0612 dead following New-Zealand-built turboprop skydiving Butler P-750 plane crash in Missouri
12/06U.S. Air Force begins combat-focused testing of B-21 Raider
11/06Japan’s H3 rocket launched on its 1st flight since a failure in December, placing 6 smallsats in orbit
11/06Long March 5 launches classified satellite, Zhuque-2E lofts direct-to-device test sats
10/06Rafael unveils Hunter Eagle interceptor for counter-drone swarm defence at ILA 2026
10/06Airbus reveals uncrewed U145 at ILA Berlin Airshow
08/06France and Germany abandon joint project to build the Future Combat Air System (FCAS)
06/06Azorra aircraft lessor aircraft places additionalfirm order for 15 Embraer E195-E2
29/05New Glenn rocket explodes on Cape Kennedy pad
28/05Blue Origin’s New Glenn rocket exploded during a static-fire test
24/05Shenzhou-23 crew arrives at Tiangong as China maps path to 2030 lunar landing
15/05President Trump says China’s Xi commits to acquiring 200 Boeing jets
15/05Space X launches CRS-34 cargo mission to the ISS
15/06B-52 crashes after takeoff at Edwards AFB, California. There were no survivors among the 8 crew members
15/06Ukrainian F-16 fighters set for IRIS-T missile integration
14/0612 dead following New-Zealand-built turboprop skydiving Butler P-750 plane crash in Missouri
12/06U.S. Air Force begins combat-focused testing of B-21 Raider
11/06Japan’s H3 rocket launched on its 1st flight since a failure in December, placing 6 smallsats in orbit
11/06Long March 5 launches classified satellite, Zhuque-2E lofts direct-to-device test sats
10/06Rafael unveils Hunter Eagle interceptor for counter-drone swarm defence at ILA 2026
10/06Airbus reveals uncrewed U145 at ILA Berlin Airshow
08/06France and Germany abandon joint project to build the Future Combat Air System (FCAS)
06/06Azorra aircraft lessor aircraft places additionalfirm order for 15 Embraer E195-E2
29/05New Glenn rocket explodes on Cape Kennedy pad
28/05Blue Origin’s New Glenn rocket exploded during a static-fire test
24/05Shenzhou-23 crew arrives at Tiangong as China maps path to 2030 lunar landing
15/05President Trump says China’s Xi commits to acquiring 200 Boeing jets
15/05Space X launches CRS-34 cargo mission to the ISS

Your are here : Home News / Most of Earth's water came from asteroids, not comets

SPACE

Most of Earth's water came from asteroids, not comets

Published by Aero3A

Asteroids, not comets, may have delivered most of Earth's water to the planet when the solar system was young, new data from a probe orbiting a comet suggests.

Comets are some of the solar system's most primitive building blocks, with many dating to soon after its formation. Scientists think that these dirty snowballs probably helped seed Earth with key ingredients for life, such as organic compounds.

The European Space Agency's (ESA) Rosetta spacecraft is helping scientists learn more about the role these icy nomads have played in the evolution of the solar system and life on Earth by analyzing the composition of Comet 67P/Churyumov–Gerasimenko. In August, Rosetta became the first spacecraft to orbit a comet, and in November, its Philae lander became the first probe to make a soft touchdown on a comet's surface. Rosetta is also the first mission to escort a comet as it travels around the sun