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11/01India’s PSLV-C62 failed during ascent, resulting in the loss of a primary Earth Observation satellite and 15 smaller co-passenger spacecraft
09/01Bangladesh explores JF-17 acquisition to replace ageing fighters
19/12Spain formalized a huge order for 50 H145Ms, 32 NH90s, 13 H135s and 6 H175Ms with Airbus Helicopters
19/12Australia completed the transfer of 49 M1A1 Abrams MBT to Ukraine
19/12EVE completes first flight of its eVTOL prototype
19/12MBDA/Saab JV has been awarded a contract by Germany to launch production of Taurus Neo cruise missile for Luftwaffe
19/12New-builtTu-214 twinjet emerges from Kazan production site
15/01Ghana orders two H175M Airbus helicopters
14/01Korean 5th generation KF-21 fighter completes four-year flight test campaign
14/01FAA orders PW1100G fuel system modifications following engine fires
14/01Boeing secured 1,175 aircraft orders in 2025, more double the 2024 total, benefiting from President Trump’s leveraging deals
13/01Lessor Aviation Capital Group (ACG) has placed an order for 50 Boeing 737 Max aircraft
13/01Germany orders eight MQ-9B SeaGuardian RPAs
13/01EDGE and INDRA sign an agreement to establish Spanish loitering munition JV
12/01Las Vegas-based ultra-low-cost carrier Allegiant Air will acquire Sun Country Airlines for $1 Bn
11/01India’s PSLV-C62 failed during ascent, resulting in the loss of a primary Earth Observation satellite and 15 smaller co-passenger spacecraft
09/01Bangladesh explores JF-17 acquisition to replace ageing fighters
19/12Spain formalized a huge order for 50 H145Ms, 32 NH90s, 13 H135s and 6 H175Ms with Airbus Helicopters
19/12Australia completed the transfer of 49 M1A1 Abrams MBT to Ukraine
19/12EVE completes first flight of its eVTOL prototype
19/12MBDA/Saab JV has been awarded a contract by Germany to launch production of Taurus Neo cruise missile for Luftwaffe
19/12New-builtTu-214 twinjet emerges from Kazan production site
15/01Ghana orders two H175M Airbus helicopters
14/01Korean 5th generation KF-21 fighter completes four-year flight test campaign
14/01FAA orders PW1100G fuel system modifications following engine fires
14/01Boeing secured 1,175 aircraft orders in 2025, more double the 2024 total, benefiting from President Trump’s leveraging deals
13/01Lessor Aviation Capital Group (ACG) has placed an order for 50 Boeing 737 Max aircraft
13/01Germany orders eight MQ-9B SeaGuardian RPAs
13/01EDGE and INDRA sign an agreement to establish Spanish loitering munition JV
12/01Las Vegas-based ultra-low-cost carrier Allegiant Air will acquire Sun Country Airlines for $1 Bn
11/01India’s PSLV-C62 failed during ascent, resulting in the loss of a primary Earth Observation satellite and 15 smaller co-passenger spacecraft
09/01Bangladesh explores JF-17 acquisition to replace ageing fighters
19/12Spain formalized a huge order for 50 H145Ms, 32 NH90s, 13 H135s and 6 H175Ms with Airbus Helicopters
19/12Australia completed the transfer of 49 M1A1 Abrams MBT to Ukraine
19/12EVE completes first flight of its eVTOL prototype
19/12MBDA/Saab JV has been awarded a contract by Germany to launch production of Taurus Neo cruise missile for Luftwaffe
19/12New-builtTu-214 twinjet emerges from Kazan production site
15/01Ghana orders two H175M Airbus helicopters
14/01Korean 5th generation KF-21 fighter completes four-year flight test campaign
14/01FAA orders PW1100G fuel system modifications following engine fires
14/01Boeing secured 1,175 aircraft orders in 2025, more double the 2024 total, benefiting from President Trump’s leveraging deals
13/01Lessor Aviation Capital Group (ACG) has placed an order for 50 Boeing 737 Max aircraft
13/01Germany orders eight MQ-9B SeaGuardian RPAs
13/01EDGE and INDRA sign an agreement to establish Spanish loitering munition JV
12/01Las Vegas-based ultra-low-cost carrier Allegiant Air will acquire Sun Country Airlines for $1 Bn
11/01India’s PSLV-C62 failed during ascent, resulting in the loss of a primary Earth Observation satellite and 15 smaller co-passenger spacecraft
09/01Bangladesh explores JF-17 acquisition to replace ageing fighters
19/12Spain formalized a huge order for 50 H145Ms, 32 NH90s, 13 H135s and 6 H175Ms with Airbus Helicopters
19/12Australia completed the transfer of 49 M1A1 Abrams MBT to Ukraine
19/12EVE completes first flight of its eVTOL prototype
19/12MBDA/Saab JV has been awarded a contract by Germany to launch production of Taurus Neo cruise missile for Luftwaffe
19/12New-builtTu-214 twinjet emerges from Kazan production site
15/01Ghana orders two H175M Airbus helicopters
14/01Korean 5th generation KF-21 fighter completes four-year flight test campaign
14/01FAA orders PW1100G fuel system modifications following engine fires
14/01Boeing secured 1,175 aircraft orders in 2025, more double the 2024 total, benefiting from President Trump’s leveraging deals
13/01Lessor Aviation Capital Group (ACG) has placed an order for 50 Boeing 737 Max aircraft
13/01Germany orders eight MQ-9B SeaGuardian RPAs
13/01EDGE and INDRA sign an agreement to establish Spanish loitering munition JV
12/01Las Vegas-based ultra-low-cost carrier Allegiant Air will acquire Sun Country Airlines for $1 Bn
11/01India’s PSLV-C62 failed during ascent, resulting in the loss of a primary Earth Observation satellite and 15 smaller co-passenger spacecraft
09/01Bangladesh explores JF-17 acquisition to replace ageing fighters
19/12Spain formalized a huge order for 50 H145Ms, 32 NH90s, 13 H135s and 6 H175Ms with Airbus Helicopters
19/12Australia completed the transfer of 49 M1A1 Abrams MBT to Ukraine
19/12EVE completes first flight of its eVTOL prototype
19/12MBDA/Saab JV has been awarded a contract by Germany to launch production of Taurus Neo cruise missile for Luftwaffe
19/12New-builtTu-214 twinjet emerges from Kazan production site

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