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Volume 3 Issue 4, April 2019

Arrival at Bennu

The OSIRIS-REx spacecraft has begun reconnoitring near-Earth asteroid Bennu. The first results unveil a global composition dominated by hydrated minerals, a diverse surface with an abundance of boulders and a shape indicative of continuous surficial change throughout its history.

See Scheeres et al.

Image: asteroid: NASA/Goddard/University of Arizona; overlay: The OSIRIS-REx Team. Cover Design: Allen Beattie.

Volume 3 Issue 4

Editorial

  • NASA’s spacecraft OSIRIS-REx is planning to bring back a sample from a near-Earth asteroid in 2023, and it has just delivered its first scientific results. It is only one of the projects from various space agencies that will put small bodies and sample return into the spotlight in the upcoming decade.

    Editorial

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Comment & Opinion

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Books & Arts

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Research Highlights

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News & Views

  • In 1951, three separate research groups established radio astronomy as a contender to the dominance of optical astronomy. Using the interstellar 21-cm line, they provided a method to look deeper into our own Galaxy and back in time to the birth of all galaxies.

    • Emma Chapman
    News & Views
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Research

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Amendments & Corrections

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Mission Control

  • The OSIRIS-REx mission has reached its target, asteroid Bennu, and is engaging in reconnaissance and early science observations in preparation for sample collection. Principal investigator team Heather Enos and Dante Lauretta provide an overview.

    • H. L. Enos
    • D. S. Lauretta
    Mission Control
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