@misc{indiciae5c9c0e44c832,
  title = {Is human spaceflight now obsolete?},
  author = {James A Van Allen},
  year = {2004},
  doi = {10.1126/science.304.5672.822b},
  url = {https://pubmed.ncbi.nlm.nih.gov/15131287/},
  note = {Source identifier: 15131287}
}