Space Exploration

Scientists Propose New Candidate for Dark Matter

  Scientists have observed many distant objects with instruments like Hubble and the upcoming James Webb Space Telescope, but everything we’ve seen represents all those stars, nebulae, and galaxies are just the tip of an unfathomable iceberg. Only about 15 percent of the universe is made up of the matter …

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Hubble Spots Sodium Chloride on Jupiter’s Moon Europa

Astronomers using the NASA/ESA Hubble Space Telescope have discovered that the yellow color visible on portions of the surface of Europa, the second Galilean satellite outward from Jupiter, is actually sodium chloride (table salt). The discovery, reported in the journal Science Advances, suggests that Europa’s underground ocean may chemically resemble …

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ESA Plans ‘Space Rider’ Reusable Spacecraft

As space agencies look to expand their presence in space, the value of reusable vehicles keeps increasing. SpaceX has seen great success with its Dragon and Falcon 9 combo, for example. The European Space Agency (ESA) has decided to move forward with its Space Rider project, an uncrewed, reusable orbital …

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