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17/10Germany places new order for 20 Eurofighters
16/10Indonesia confirms plan to acquire 42 Chinese J-10 fighters amid U.S. F-15EX uncertainty
14/10Belgium’s first F-35A arrival set to unlock early F-16 transfers to Ukraine
13/10Starship successfully completes 11th flight test
10/10Denmark selects European SAMP/T NG air defence system
08/10Blue Origin flies 6th crewed New Shepard flight in 2025
07/10Sweden has formally signed for a future fleet of four Embraer C-390 tactical transports
06/10Canada will field initial 16 F-35A, still weighing options for remaining 72 stealth fighters
19/06Starship 36 was destroyed in a massive test stand explosion on Masseys Space X base
18/06LOT Polish Airlines places its first ever Airbus order for 40 A220s
17/06Starlux orders 10 more A350-1000s at the Paris Air Show
17/06Operating a fleet of more than 100 Airbus aircraft, Vietjet orders 100 Airbus A321neo
16/06Paris Air Show: Riyadh Air placesfirm order for 25 Airbus A350-1000 aircraft
16/06Paris Air Show: ANA finalises order for 27 A321neo and A321XLR aircraft
16/06Israel condemns black partition walls around its pavilions at Paris Air Show
17/10Germany places new order for 20 Eurofighters
16/10Indonesia confirms plan to acquire 42 Chinese J-10 fighters amid U.S. F-15EX uncertainty
14/10Belgium’s first F-35A arrival set to unlock early F-16 transfers to Ukraine
13/10Starship successfully completes 11th flight test
10/10Denmark selects European SAMP/T NG air defence system
08/10Blue Origin flies 6th crewed New Shepard flight in 2025
07/10Sweden has formally signed for a future fleet of four Embraer C-390 tactical transports
06/10Canada will field initial 16 F-35A, still weighing options for remaining 72 stealth fighters
19/06Starship 36 was destroyed in a massive test stand explosion on Masseys Space X base
18/06LOT Polish Airlines places its first ever Airbus order for 40 A220s
17/06Starlux orders 10 more A350-1000s at the Paris Air Show
17/06Operating a fleet of more than 100 Airbus aircraft, Vietjet orders 100 Airbus A321neo
16/06Paris Air Show: Riyadh Air placesfirm order for 25 Airbus A350-1000 aircraft
16/06Paris Air Show: ANA finalises order for 27 A321neo and A321XLR aircraft
16/06Israel condemns black partition walls around its pavilions at Paris Air Show
17/10Germany places new order for 20 Eurofighters
16/10Indonesia confirms plan to acquire 42 Chinese J-10 fighters amid U.S. F-15EX uncertainty
14/10Belgium’s first F-35A arrival set to unlock early F-16 transfers to Ukraine
13/10Starship successfully completes 11th flight test
10/10Denmark selects European SAMP/T NG air defence system
08/10Blue Origin flies 6th crewed New Shepard flight in 2025
07/10Sweden has formally signed for a future fleet of four Embraer C-390 tactical transports
06/10Canada will field initial 16 F-35A, still weighing options for remaining 72 stealth fighters
19/06Starship 36 was destroyed in a massive test stand explosion on Masseys Space X base
18/06LOT Polish Airlines places its first ever Airbus order for 40 A220s
17/06Starlux orders 10 more A350-1000s at the Paris Air Show
17/06Operating a fleet of more than 100 Airbus aircraft, Vietjet orders 100 Airbus A321neo
16/06Paris Air Show: Riyadh Air placesfirm order for 25 Airbus A350-1000 aircraft
16/06Paris Air Show: ANA finalises order for 27 A321neo and A321XLR aircraft
16/06Israel condemns black partition walls around its pavilions at Paris Air Show
17/10Germany places new order for 20 Eurofighters
16/10Indonesia confirms plan to acquire 42 Chinese J-10 fighters amid U.S. F-15EX uncertainty
14/10Belgium’s first F-35A arrival set to unlock early F-16 transfers to Ukraine
13/10Starship successfully completes 11th flight test
10/10Denmark selects European SAMP/T NG air defence system
08/10Blue Origin flies 6th crewed New Shepard flight in 2025
07/10Sweden has formally signed for a future fleet of four Embraer C-390 tactical transports
06/10Canada will field initial 16 F-35A, still weighing options for remaining 72 stealth fighters
19/06Starship 36 was destroyed in a massive test stand explosion on Masseys Space X base
18/06LOT Polish Airlines places its first ever Airbus order for 40 A220s
17/06Starlux orders 10 more A350-1000s at the Paris Air Show
17/06Operating a fleet of more than 100 Airbus aircraft, Vietjet orders 100 Airbus A321neo
16/06Paris Air Show: Riyadh Air placesfirm order for 25 Airbus A350-1000 aircraft
16/06Paris Air Show: ANA finalises order for 27 A321neo and A321XLR aircraft
16/06Israel condemns black partition walls around its pavilions at Paris Air Show
17/10Germany places new order for 20 Eurofighters
16/10Indonesia confirms plan to acquire 42 Chinese J-10 fighters amid U.S. F-15EX uncertainty
14/10Belgium’s first F-35A arrival set to unlock early F-16 transfers to Ukraine
13/10Starship successfully completes 11th flight test
10/10Denmark selects European SAMP/T NG air defence system
08/10Blue Origin flies 6th crewed New Shepard flight in 2025
07/10Sweden has formally signed for a future fleet of four Embraer C-390 tactical transports
06/10Canada will field initial 16 F-35A, still weighing options for remaining 72 stealth fighters
19/06Starship 36 was destroyed in a massive test stand explosion on Masseys Space X base
18/06LOT Polish Airlines places its first ever Airbus order for 40 A220s
17/06Starlux orders 10 more A350-1000s at the Paris Air Show
17/06Operating a fleet of more than 100 Airbus aircraft, Vietjet orders 100 Airbus A321neo
16/06Paris Air Show: Riyadh Air placesfirm order for 25 Airbus A350-1000 aircraft
16/06Paris Air Show: ANA finalises order for 27 A321neo and A321XLR aircraft
16/06Israel condemns black partition walls around its pavilions at Paris Air Show

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

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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