Evolution of the semimajor axis of a 0.5 M⊕ planet in planetesimal disks with masses of 20 M⊕ (top panel) and 40 M⊕ (bottom panel). The same curves are also
Relationship between total group age T and crown group age tcg across various diversification rates λ − µ, equation 4. The heatmap represents the crown group age for a given
A Science Strategy for the Human Exploration of Mars National Academies of Sciences, Engineering, and Medicine Full report Exploration as a scientific endeavor exemplifies great American innovation. The first human
Oblique perspective view from southeast of the 2 m EarthDEM dataset (Figure 4) showing the topology of the impact structure with the 26.4-26.8 km predicted outer tectonic rim in red
Secular evolution of the obliquities of TOI-1710 from four-body secular integrations. The semimajor axis of the intermediate companion varies across panels. The obliquity evolution of TOI-1710 A b (red) and
Camera footprint on the sky, including the expected in-flight absolute pointing error. Different colours represent different number of cameras observing the same region of the sky. Grey stars belong to
Molecular composition of haze samples from the N2-rich/CH4 and H2O-rich/CH4 experiments. Left panels: Very high-resolution mass spectra (m/z 150–800) of haze particles produced from the N2-rich/CH4 and H2O-rich/CH4 experiments, acquired
Keith Cowing Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻 Follow on
The theory of panspermia holds that life is spread through the cosmos via asteroids, comets, and other objects. When the building blocks of life emerge on one planet, impacts can
ID: ESP_049028_2065 date: 10 January 2017 altitude: 287 km NASA/JPL-Caltech/University of Arizona Larger image The material on the floor of this crater appears to have flowed like ice, and contains
