All posts by Dimitra Atri

Dimitra Atri

About Dimitra Atri

Dimitra is a Research Scientist at the Particle Astrophysics Group, Blue Marble Space Institute of Science. His papers can be accessed here: http://arxiv.org/a/atri_d_1 His home page is here: http://kusmos.phsx.ku.edu/~dimitra/Home.html

  • Exploding stars and DNA

    Our Galaxy is filled with high-energy subatomic particles generated by exploding stars or supernovae, also known as cosmic rays. These particles strike the Earth’s atmosphere and produce more (secondary) particles, which damages the ozone layer and causes DNA damage to terrestrial and marine life. In Carl Sagan's words: " The evolution of life is driven in parts through mutations by the
  • Decoding the discovery: Another giant leap for mankind

    I have always wondered what it would have been like to be alive when Einstein proposed his theories of relativity, or when Watson & Crick cracked the structure of DNA or when Armstrong & Aldrin landed on the moon. Well, I experienced it yesterday, when I witnessed history in the making.

    It

  • Higgs Boson: Yes/No/Maybe?

    It is always good to see science covered in the mainstream media. It is equally disheartening to see misinterpretation of scientific results. I am sure you've been hearing a lot about the "discovery" of the Higgs Boson particle, also (unfortunately) coined as the "God particle". If you are not a physicist, you might find difficulty
  • Yesterday was April 1

    So, let me explain why one could NEVER receive an ETI signal with particle detectors. As I mentioned yesterday, in addition to electromagnetic radiation, our galaxy is filled with charged particles known as comic rays (for historical reasons). These particles are highly energetic, traveling at relativistic speeds, so one could think to use them to communicate
  • OMG! signal: Evidence of extraterrestrial life?

    As many of you may know, on August 15, 1977, Jerry Ehman of Ohio State (By the way, OSU lost to KU yesterday. Go Jayhawks!), while working on the SETI project at the Big Ear radio telescope discovered the famous Wow! signal. Since it was a narrowband radio signal, it could have been
  • Neutrinos still superluminal

    By now, you must have heard about the "BREAKING NEWS" that neutrino velocity measurement conducted by the OPERA experiment was flawed because of a faulty cable connection. If you think about this, a loose/faulty connection (as mentioned in various media outlets) would result in a delay in the signal. So, one would record a