• ScienceDaily | 4/18/2018 | Staff
    Ho said it's about finding a balance between time and the amount of fuel -- getting there fast requires more fuel. If time isn't an issue, slow but efficient low-thrust propulsion might be a better...
    143 views emmymmile234567
  • phys.org | 4/2/2018 | Staff
    The Trump administration rolled back Obama-era pollution and fuel efficiency rules for cars and light trucks on Monday, saying they were too stringent. The decision by President Donald Trump's...
    528 views marika

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