Results 161 to 170 of about 131,482 (278)

Astrometry, orbit determination, and thermal inertia of the Tianwen-2 target asteroid (469219) Kamo`oalewa [PDF]

open access: green
Marco Fenucci   +11 more
openalex   +1 more source

Derivation of 1.064 μm albedo on the C-type asteroid Ryugu from laser pulse intensity measurement of the Hayabusa2 LIDAR [PDF]

open access: gold, 2022
Ryuhei Yamada   +12 more
openalex   +1 more source

Before it's too late: The extinction script, multi‐species reproductive futurism and Extinction Rebellion

open access: yesTransactions of the Institute of British Geographers, Volume 50, Issue 4, December 2025.
Short Abstract The belief that we have to act now to avoid a future lost knowingly to self‐inflicted extinction operates through what I term ‘the extinction script’. As a technology of power that regulates climate futures, the extinction script implores the already threatened subject to act now and to do so urgently.
Amy Robson
wiley   +1 more source

Boulders on Bennu: Low Apparent Thermal Inertia Caused by Thermal Fatigue Fractures

open access: yesGeophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Boulders covering the surfaces of asteroids Bennu and Ryugu have apparent thermal inertias substantially lower than their meteorite analogs. This has led to the inference that boulders on Bennu may be unlike any known meteorite. However, samples returned from Ryugu have a thermal inertia 3.5 times higher than the apparent thermal inertia ...
Catherine M. Elder
wiley   +1 more source

A Spectroscopically Unique Main-Belt Asteroid: 10537 (1991 RY16) [PDF]

open access: bronze, 2008
Nicholas Moskovitz   +6 more
openalex   +1 more source

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

open access: yesAdvanced Engineering Materials, Volume 27, Issue 22, November 2025.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos   +8 more
wiley   +1 more source

Quantification of Crystal Chemistry of Fe‐Mg Carbonates by Raman Microspectroscopy and Near‐Infrared Remote Sensing

open access: yesEarth and Space Science
On Earth, carbonate minerals are widely used as recorders of the geological environments in which they formed. Here, we present a method designed to retrieve the crystal chemistry of Fe‐Mg carbonate minerals using infrared remote sensing or Raman ...
Pierre Beck   +7 more
doaj   +1 more source

Causes of delayed angiosperm diversification: The photosynthetic revolution, increased opportunity costs of anti‐herbivore defenses, selection for qualitative toxins, and acceleration of plant–herbivore coevolution

open access: yesAmerican Journal of Botany, Volume 112, Issue 11, November 2025.
Abstract Why did it take so long for angiosperms to diversify after they arose? Here I consider the indirect but potentially crucial impact of the “photosynthetic revolution” on plant–herbivore coevolution. Increased vein density in fossil leaves implies a doubling in photosynthesis 125–100 million years ago.
Thomas J. Givnish
wiley   +1 more source

Asteroid rotation periods from the Palomar Transient Factory survey

open access: green, 2012
David Polishook   +3 more
openalex   +1 more source

Asteroidal Theories and Experiments [PDF]

open access: bronze, 1971
Gustaf Arrhenius, Hannes Alfvén
openalex   +1 more source

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