All Stories

  1. Connect the dots...finding all possible orbits between two points.
  2. How fast can an object collide with a tripping hazard without tipping over?
  3. Arrange for objects launched sequentially from a satellite to arrive at the same place and time!
  4. How does staging allow a rocket to push its payload to a faster final speed?
  5. Can a toy drone fly on Mars? How much faster should its rotors rotate to hover on other worlds?
  6. Get outta here! How to escape from a circular orbit as fast as possible.
  7. Maximum Momentum and Kinetic Energy of a Rocket
  8. Modeling ICBM Trajectories Around a Rotating Globe with Systems Tool Kit
  9. Acceleration of Coronal Mass Ejection Plasma in the Low Corona as Measured by the Citizen CATE Experiment
  10. Rocket Propulsion, Classical Relativity, and the Oberth Effect
  11. Computational skydiving
  12. Solution to the March, 2019 Challenge Downton Abbey*
  13. What is the final speed of a rocket that ejects matter in discrete pellets, not continuously?
  14. Air drag in the projectile lab
  15. Slow Down or Speed up? Lowering Periapsis Versus Escaping from a Circular Orbit
  16. Modeling Rosetta’s final descent
  17. Satellite splat II: an inelastic collision with a surface-launched projectile and the maximum orbital radius for planetary impact
  18. Angular momentum and Philae's descent
  19. Rosetta Mission's “7 Hours of Terror” and Philae's Descent
  20. Satellite splat: an inelastic collision with a surface-launched projectile
  21. Extreme X-Ray Behavior of the Low-Luminosity Active Nucleus in NGC 4395
  22. A qualitative test of a unified model of Seyfert galaxies with BeppoSAX
  23. A search for cyclotron lines in the bursting pulsar, GRO J1744-28
  24. RXTE observations of Cas A
  25. In‐Flight Performance of the High Energy X‐Ray Timing Experiment on theRossi X‐Ray Timing Explorer
  26. Radio pulsars observed at X-ray energies by the X-ray timing explorer
  27. ROSATPosition of GRO J1744−28 and Search for Its Near‐Infrared Counterpart
  28. Optical/Near‐Infrared Observations of GRO J1744−28
  29. Detection of Hard X-Ray Emission from Mkn 463
  30. H [CSC]i[/CSC] Absorption toward the Nucleus of the Powerful Radio Galaxy Cygnus A: Evidence for an Atomic Obscuring Torus?
  31. Broad infrared line emission from the nuclei of Seyfert 2 galaxies