ScienceDaily: Astronomy News |
- To boldly go? Experts issue ethics guidelines for health standards on NASA's next generation of risky missions
- 'Geologic clock' helps determine moon's age
- Galactic serial killer: Galaxy engulfed several other galaxies in its violent history
| Posted: 02 Apr 2014 11:42 AM PDT An Institute of Medicine committee has issued a report with ethics principles and guidelines to aid NASA in decision-making for longer, higher risk human spaceflights. Such missions, including extended stays on the International Space Station and flights to Mars, have higher risks and are unlikely to meet the space agency's current health standards. |
| 'Geologic clock' helps determine moon's age Posted: 02 Apr 2014 10:39 AM PDT Planetary scientists have determined that the moon formed nearly 100 million years after the start of the solar system, according to a new article. This conclusion is based on measurements from the interior of the Earth combined with computer simulations of the protoplanetary disk from which the Earth and other terrestrial planets formed. |
| Galactic serial killer: Galaxy engulfed several other galaxies in its violent history Posted: 02 Apr 2014 06:58 AM PDT A new image shows two contrasting galaxies: NGC 1316, and its smaller neighbor NGC 1317. These two are quite close to each other in space, but they have very different histories. The small spiral NGC 1317 has led an uneventful life, but NGC 1316 has engulfed several other galaxies in its violent history and shows the battle scars. |
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