Tag

Bennu

All articles tagged with #bennu

Bennu’s Cracked Boulders Explain Its Surprising Heat Loss
science24 days ago

Bennu’s Cracked Boulders Explain Its Surprising Heat Loss

NASA researchers analyzing Bennu’s surface samples found the boulders are porous and riddled with extensive crack networks. XCT scans and lab thermography show cracks significantly influence heat transfer. When scaled up to boulder size, these findings explain Bennu’s observed thermal inertia and resolve the mismatch between telescope data and in-situ measurements, grounding asteroid interpretations in the actual samples.

Amino Acids Formed in Freezing Space on Bennu, Hinting at Life's Beginnings Beyond Water
science1 month ago

Amino Acids Formed in Freezing Space on Bennu, Hinting at Life's Beginnings Beyond Water

NASA’s analysis of asteroid Bennu’s samples shows amino acids formed in frigid conditions long before the asteroid’s current orbit, with 14 of Earth’s 20 standard amino acids detected and evidence that left‑ and right‑handed forms carry different nitrogen isotopes. This challenges the idea that liquid water is always needed for amino‑acid formation, suggesting prebiotic chemistry could occur in more environments and expanding potential habitats for life in the universe, while signaling new questions about chirality in biology.

Bennu’s Amino Acids Point to Ice-Driven Origins of Life’s Building Blocks
science1 month ago

Bennu’s Amino Acids Point to Ice-Driven Origins of Life’s Building Blocks

NASA’s OSIRIS-REx samples from the 4.6-billion-year-old asteroid Bennu reveal amino acids, including glycine, can form in space and may arise in icy, radiation-exposed conditions in the early Solar System rather than only in liquid water; this suggests multiple pathways for the building blocks of life and shows Bennu’s isotopic signatures differ from the Murchison meteorite, indicating diverse origins for prebiotic molecules.

NASA's OSIRIS-REx Unveils Bennu's Ancient Ingredients
science-and-space1 year ago

NASA's OSIRIS-REx Unveils Bennu's Ancient Ingredients

NASA's OSIRIS-REx mission has returned a sample from asteroid Bennu, revealing it contains key materials from the early solar system, including carbon, nitrogen, and organic compounds. The sample also shows signs of a watery past, suggesting Bennu may have originated from a primitive ocean world. This discovery provides valuable insights into the conditions of the early solar system and the potential origins of life on Earth.

"NASA Monitors Massive Asteroid Bennu's Potential Earth Impact"
spacescience2 years ago

"NASA Monitors Massive Asteroid Bennu's Potential Earth Impact"

NASA is tracking an asteroid named Bennu, which is larger than the Empire State Building and has a .05% chance of hitting Earth in 2182. Scientists have been working on solutions to potentially alter the trajectory of asteroids, with a successful mission called "Dart" in 2022. Bennu, discovered in 1999, has come close to Earth multiple times and contains water and lots of carbon, the building blocks of life.

"NASA Monitors Massive Bennu Asteroid for Potential Earth Impact"
space-science2 years ago

"NASA Monitors Massive Bennu Asteroid for Potential Earth Impact"

NASA is tracking an asteroid named Bennu, which is larger than the Empire State Building and has a .05% chance of hitting Earth in 2182. Scientists are working on solutions to mitigate the hazard of asteroid collisions, with one successful mission involving altering the trajectory of an asteroid using a spacecraft. Bennu, discovered in 1999, has come close to Earth multiple times and contains water and carbon, the building blocks of life.