Space

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We summarize the week's science breakthroughs every Thursday.

  1. Planetary Science

    NASA’s Perseverance rover has touched down on Mars

    The spacecraft will arrive at Mars on February 18, joining missions from China and the United Arab Emirates.

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  2. Astronomy

    The number of Milky Way nova explosions per year has been pinned down

    Knowing how frequently these stellar eruptions occur will help determine their contribution to the galaxy’s chemical makeup.

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  3. Earth

    Fossil mimics may be more common in ancient rocks than actual fossils

    Evidence of early life may be harder to preserve than pseudofossils — structures that form abiotically but resemble living remnants.

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  4. Astronomy

    Two exoplanet families redefine what planetary systems can look like

    The TRAPPIST-1 and TOI-178 systems, both home to multiple bunched-up planets, have densities and orbits that defy expectations.

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  5. Cosmology

    Einstein’s theory of general relativity unveiled a dynamic and bizarre cosmos

    Albert Einstein’s theory of general relativity foretold space-bending beasts, cosmic shock waves and mysterious forces.

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  6. Physics

    The Milky Way’s newfound high-energy glow hints at the secrets of cosmic rays

    Gamma rays with energies approaching a quadrillion electron volts emanate from the disk of the Milky Way.

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  7. Space

    Crushed space rocks hint at exoplanets’ early atmospheric makeup

    Experiments that heat crushed-up meteorites are helping astronomers understand what to look for in exoplanet atmospheres.

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  8. Astronomy

    Astronomers spotted a rare galaxy shutting down star formation

    A distant galaxy harbors an active black hole and active star formation at the same time – an unusual coincidence.

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  9. Space

    The first magnetar flare detected from another galaxy was tracked to its home

    An outburst from the super magnetic remains of a star suggests similar eruptions are behind some of the most powerful explosions in the universe.

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  10. Space

    The most ancient supermassive black hole is bafflingly big

    The farthest known quasar challenges ideas about how the first supermassive black holes in the universe formed.

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  11. Space

    The Parker Solar Probe will have company on its next pass by the sun

    The probe is about to make another close pass of the sun. This time, Solar Orbiter, BepiColombo and others will be watching too.

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  12. Space

    Here are the highlights from a busy year in space launches

    Satellites, Mars rovers and astronauts launched into space in 2020.

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