Minor bodies such as Kuiper Belt objects, comets, and asteroids constitute the rocky and icy debris left over from the planet building phase of our solar system. The existence of reservoirs of small rocky bodies (i.e., asteroids/planetesimals) in orbits around young stellar systems is now well established, with their presence being required by current (exo)planetary formation theories.
Decades of planetary exploration have revealed widespread evidence for ancient fluvial activity on the surface of Mars, including deeply incised valleys, paleolake basins, and an extensive sedimentary rock record. Acquisition of high-resolution remote sensing data of the martian surface (e.g., images and topography) over the past 5-10 years have allowed for quantitative analysis of the large-scale sedimentary structures of martian sedimentary deposits.
The International Space Orchestra, the world’s first orchestra composed of space scientists, is releasing a cover of Sigur Rós’ Viðrar Vel Til Loftárása.
As part of the festive season, The International Space Orchestra offer covers of Sigur Rós’ song Viðrar vel til loftárása, produced by Sigur Rós with long-term collaborator musician Alex Somers, and performed by the International Space Orchestra.
ENCORE The light bulb needs changing. Edison’s incandescent bulb, virtually unaltered for more than a century, is now being eclipsed by the LED.
ENCORE The moon jellyfish has remarkable approach to self-repair. If it loses a limb, it rearranges its remaining body parts to once again become radially symmetric. Humans can’t do that, but a new approach that combines biology with nanotechn
ENCORE Shhh. Is someone coming?
Could it be that Homo sapiens is the first intelligent species in the cosmos? Given the number of planets now known to pepper space, that seems unlikely.
Nonetheless, Harvard astronomer Avi Loeb and his colleagues point out that the overwhelming majority of intelligent species are still in the future. While humans are probably not the first, it may be true that humans are trailblazers when it comes to intelligence.
On December 14, Nathalie Cabrol, Director of the Carl Sagan Center for the Study of Life in the Universe at the SETI Institute, gave the prestigious Sagan Lecture at the fall meeting of the American Geophysical Union (AGU). If you missed it, you can still sign up at AGU to watch the recorded stream once they make it available.
SETI Institute artists are being inspired by our search for alien life.