Washington Post: President Obama has sent a letter to his Russian counterpart that raises the prospect of the United States halting development of its missile defense program in Eastern Europe if Russia helps resolve the threat posed by Iran’s nuclear program, senior administration officials said last night.
Obama’s letter, delivered to Russian President Dmitry Medvedev in mid-February, “covered a number of topics” of mutual interest to the two countries, “including the issue of missile defense and how it relates to the Iranian threat,” a senior administration official said.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
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