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14/04Israel says 99% of Iran’s missiles and drones were intercepted by multi-layered air defence system
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11/04A SpaceX Falcon 9 rocket launched a U.S. Space Force military weather monitoring satellite.
09/04ULA launched a classified US NRO spy satellite on the final flight of the Delta 4 Heavy rocket
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03/04AutoFlight delivers Prosperity eVTOL to unspecified Japanese operator
02/04Korean Air has firmed up an order for 27 Airbus A350-1000s and 6 A350-900s
30/03Space X Falcon 9 launches 5,000 kg Eutelsat 36D satellite from Kenedy Space Center
27/03Chinese Long March 6A launches second Yunhai-3 satellite
23/03A Soyuz-2.1a send the Soyuz MS-25 crewed spacecraft with Russian, American and Belarusian cosmonauts to the ISS
15/03US Navy takes delivery of first MQ-25 autonomous refueller
14/03Bell extends H-1 production with $455m order for 12 AH-1Z attack helicopter from Nigeria
13/03DRO-A and B Chinese spacecraft, apparently intended for lunar orbit, have been lost following an issue with a Long March 2C rocket
12/03The 1st flight of a privately developed Japanese Kairos rocket ended in catastrophic failure after liftoff
14/04Israel says 99% of Iran’s missiles and drones were intercepted by multi-layered air defence system
13/04Iran launches 110 ballistic missiles, 36 cruise missiles and 185 drones in strike toward Israel
11/04A SpaceX Falcon 9 rocket launched a U.S. Space Force military weather monitoring satellite.
09/04ULA launched a classified US NRO spy satellite on the final flight of the Delta 4 Heavy rocket
07/04SpaceX launched the 1st in a new line of dedicated rideshare missions delivering 11 satellites into mid-inclination orbits
06/04Greece confirms intent to purchase 35 UH-60Ms from Sikorsky
03/04AutoFlight delivers Prosperity eVTOL to unspecified Japanese operator
02/04Korean Air has firmed up an order for 27 Airbus A350-1000s and 6 A350-900s
30/03Space X Falcon 9 launches 5,000 kg Eutelsat 36D satellite from Kenedy Space Center
27/03Chinese Long March 6A launches second Yunhai-3 satellite
23/03A Soyuz-2.1a send the Soyuz MS-25 crewed spacecraft with Russian, American and Belarusian cosmonauts to the ISS
15/03US Navy takes delivery of first MQ-25 autonomous refueller
14/03Bell extends H-1 production with $455m order for 12 AH-1Z attack helicopter from Nigeria
13/03DRO-A and B Chinese spacecraft, apparently intended for lunar orbit, have been lost following an issue with a Long March 2C rocket
12/03The 1st flight of a privately developed Japanese Kairos rocket ended in catastrophic failure after liftoff
14/04Israel says 99% of Iran’s missiles and drones were intercepted by multi-layered air defence system
13/04Iran launches 110 ballistic missiles, 36 cruise missiles and 185 drones in strike toward Israel
11/04A SpaceX Falcon 9 rocket launched a U.S. Space Force military weather monitoring satellite.
09/04ULA launched a classified US NRO spy satellite on the final flight of the Delta 4 Heavy rocket
07/04SpaceX launched the 1st in a new line of dedicated rideshare missions delivering 11 satellites into mid-inclination orbits
06/04Greece confirms intent to purchase 35 UH-60Ms from Sikorsky
03/04AutoFlight delivers Prosperity eVTOL to unspecified Japanese operator
02/04Korean Air has firmed up an order for 27 Airbus A350-1000s and 6 A350-900s
30/03Space X Falcon 9 launches 5,000 kg Eutelsat 36D satellite from Kenedy Space Center
27/03Chinese Long March 6A launches second Yunhai-3 satellite
23/03A Soyuz-2.1a send the Soyuz MS-25 crewed spacecraft with Russian, American and Belarusian cosmonauts to the ISS
15/03US Navy takes delivery of first MQ-25 autonomous refueller
14/03Bell extends H-1 production with $455m order for 12 AH-1Z attack helicopter from Nigeria
13/03DRO-A and B Chinese spacecraft, apparently intended for lunar orbit, have been lost following an issue with a Long March 2C rocket
12/03The 1st flight of a privately developed Japanese Kairos rocket ended in catastrophic failure after liftoff
14/04Israel says 99% of Iran’s missiles and drones were intercepted by multi-layered air defence system
13/04Iran launches 110 ballistic missiles, 36 cruise missiles and 185 drones in strike toward Israel
11/04A SpaceX Falcon 9 rocket launched a U.S. Space Force military weather monitoring satellite.
09/04ULA launched a classified US NRO spy satellite on the final flight of the Delta 4 Heavy rocket
07/04SpaceX launched the 1st in a new line of dedicated rideshare missions delivering 11 satellites into mid-inclination orbits
06/04Greece confirms intent to purchase 35 UH-60Ms from Sikorsky
03/04AutoFlight delivers Prosperity eVTOL to unspecified Japanese operator
02/04Korean Air has firmed up an order for 27 Airbus A350-1000s and 6 A350-900s
30/03Space X Falcon 9 launches 5,000 kg Eutelsat 36D satellite from Kenedy Space Center
27/03Chinese Long March 6A launches second Yunhai-3 satellite
23/03A Soyuz-2.1a send the Soyuz MS-25 crewed spacecraft with Russian, American and Belarusian cosmonauts to the ISS
15/03US Navy takes delivery of first MQ-25 autonomous refueller
14/03Bell extends H-1 production with $455m order for 12 AH-1Z attack helicopter from Nigeria
13/03DRO-A and B Chinese spacecraft, apparently intended for lunar orbit, have been lost following an issue with a Long March 2C rocket
12/03The 1st flight of a privately developed Japanese Kairos rocket ended in catastrophic failure after liftoff
14/04Israel says 99% of Iran’s missiles and drones were intercepted by multi-layered air defence system
13/04Iran launches 110 ballistic missiles, 36 cruise missiles and 185 drones in strike toward Israel
11/04A SpaceX Falcon 9 rocket launched a U.S. Space Force military weather monitoring satellite.
09/04ULA launched a classified US NRO spy satellite on the final flight of the Delta 4 Heavy rocket
07/04SpaceX launched the 1st in a new line of dedicated rideshare missions delivering 11 satellites into mid-inclination orbits
06/04Greece confirms intent to purchase 35 UH-60Ms from Sikorsky
03/04AutoFlight delivers Prosperity eVTOL to unspecified Japanese operator
02/04Korean Air has firmed up an order for 27 Airbus A350-1000s and 6 A350-900s
30/03Space X Falcon 9 launches 5,000 kg Eutelsat 36D satellite from Kenedy Space Center
27/03Chinese Long March 6A launches second Yunhai-3 satellite
23/03A Soyuz-2.1a send the Soyuz MS-25 crewed spacecraft with Russian, American and Belarusian cosmonauts to the ISS
15/03US Navy takes delivery of first MQ-25 autonomous refueller
14/03Bell extends H-1 production with $455m order for 12 AH-1Z attack helicopter from Nigeria
13/03DRO-A and B Chinese spacecraft, apparently intended for lunar orbit, have been lost following an issue with a Long March 2C rocket
12/03The 1st flight of a privately developed Japanese Kairos rocket ended in catastrophic failure after liftoff

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