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Newsweek · 2026-07-10 · 25 pages · text from the file's own layer

This declassified document is a March 22, 1949 letter from the Security Operations Branch of the U.S. Atomic Energy Commission's Santa Fe Directed Operations. It forwards a transcript of a Conference on Aerial Phenomena held at Los Alamos Scientific Laboratory on February 16, 1949. At the conference, Dr. LaPaz described the green fireballs, including his own Starvation Peak sighting of December 12, 1948, and argued that they were not conventional meteors. Dr. Teller and others discussed why the fireballs made no sound, and no conclusion was reached.

  • p. 3 …hue green, or yello-11 green, such ae I had never observed in meteor falls before…
  • p. 4 …The green fireballs are unusual in this respect: probably that they a.re horizontal or nearly…
  • p. 5 …It should also bave the property that it is a very remerkable h·t1e of green…
  • p. 7 …They are strictly e.mlogous to the green fireballs of the night of December 12. On…
  • p. 8 …In the ce,se of the tuo green fireball paths, determined from Los Ala::no:s…
  • p. 9 …After 'tfliat I •ve been telling you about the green 1'1::e balls, you. probably…
  • p. 10 …I don't kn.01, whether you gentlemen could auggest an easy way to obtain green…
  • p. 11 …and notice the.t they Cflma 1n at high angles to the horizontal, whereao the green…
  • p. 12 …I don't think o.nybody, I menn in the line of green fir ballo, in…
  • p. 13 …You sometimes see green, Dr. ·Bradbury, but it 1a a blue green. The blue ♦-g?"een…
  • p. 14 …But it's apparently a yellowish-green we 9re t.a.1k1ng G.bout here. If…
  • p. 15 …I baren 1 t claaaified ·i:;hs.t particular fall, however, with the green fireba1le and…
  • p. 16 …In the ca.Be of the green fireballs, to my knouledge, no such train haa been…
  • p. 17 …ln the case of those \1ho observed the green f'ireballa, o y that neor the…
  • p. 18 …Definitely light green in color. I am still 1;,crried about the fact that they don…
  • p. 19 …Arizona it w.s green until it turned straight down and ve·e-rea. Soina , . . • Dr…
  • p. 20 …a natural e.xple.nation to thece green f1reballs. Dr. Teller: ..... but I vould lik~ to…
  • p. 21 …l1ith one of those, a bright green :fii-eball might be photographed, but they are not…
  • p. 22 …which one of the obeervora mentions a green color. Bot this peculiarin yellow-green vbich moat…
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• L.,
U NIT ED S TATES
A TOMIC ENE RG Y C OMM I SSIO N
LOS ALAMOS, NEW MEXICO
Authority:
ADDRESS REPLY TO :
NND 5837811ANAGER, SANTA FE DIRECTED OPERATIONS
IJ, S. A TOMIC ENERGY COMMISSION
P. 0. BOX 1539
LOS ALAMOS, NEW M EXICO
ANO REF ER TO:
SFD- 3- 1 i.:a.r ch 22 , 1949
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