Meet the Seven Celestial Sisters of the Sky

Meet the Seven Celestial Sisters of the Sky   In the story Top 10 Cool Things in the Sky, you get a sneak peak at a little star cluster that is famous the world over. Its called The Pleiades and makes its best appearance in the night skies from late November to through March each year. In November, theyre up from dusk to dawn. This star cluster has been observed from nearly every part of our planet, and everyone from amateur astronomers with small telescopes to astronomers using Hubble Space Telescope  has taken a shot of it.   Many of the worlds cultures and religions focus on the Pleiades. These stars have had many names and show up on clothing, flats, pottery, and artwork. The name we know these stars by now comes from the ancient Greeks, who saw them as a group of woman who were companions to the goddess Artemis. The seven brightest stars of the Pleiades are named after these women:   Maia, Electra, Taygete, Alcyone, Celaeno, Sterope, and Merope. There is a fascinating Wikipedia look at the Pleiades in different cultures here: http://en.wikipedia.org/wiki/Pleiades_in_folklore_and_literature.   So, What are the Pleiades to Astronomers? They make up an open star cluster that lies about 400 light-years away, in the direction of the constellation Taurus, the Bull. Its six brightest stars are relatively easy to see with the naked eye, and folks with very sharp vision and a dark sky sight can see at least 7 stars here. In reality, the Pleiades has more than a thousand stars that formed in the last 150 million years. That makes them relatively young (compared to the Sun, which is about 4.5 billion years old). Interestingly enough, this cluster also contains many brown dwarfs: objects too hot to be planets but too cold to be stars. As theyre not very bright in optical light, astronomers turn to infrared-sensitive instruments to study them. What they learn helps them determine the ages of their brighter cluster neighbors and understand how star formation uses up the available material in a cloud. The stars in this cluster are hot and blue, and astronomers classify them as B-type stars. Currently the core of the cluster takes up an area of space about 8 light-years across. The stars are not gravitationally bound to each other, and so in about 250 million years they will begin to wander away from each other. Each star will travel on its own through the galaxy. Their stellar birthplace probably looked largely like the Orion Nebula, where hot young stars are forming in a region of space about 1,500 light-years away from us. Eventually these stars will go their separate ways as the cluster moves through the Milky Way. Theyll become whats known as a moving association or a moving cluster.   The Pleiades appear to be passing through a cloud of gas and dust that astronomers once thought was part of their birth cloud. It turns out this nebula (sometimes called the Maia Nebula) is unrelated to the stars. It does make a pretty sight, though. You can spot it in the nighttime sky pretty easy, and through binoculars or a small telescope, they look spectacular!

Even in Pot-Legal States, Federal Marijuana Laws Remain

Even in Pot-Legal States, Federal Marijuana Laws Remain Even as more states legalize marijuana for recreational or medical uses, production, sale, and possession of marijuana in those states continue to be violations of federal drug laws.   And as the Government Accountability Office (GAO) reports, the U.S. Department of Justice (DOJ) will, under certain circumstances, arrest and prosecute violators of federal marijuana laws even in pot-legal states. Background As of June 2015, Alaska, Colorado, Oregon, Washington, and the District of Columbia had enacted laws legalizing marijuana for both recreational and medical uses. In all, 23 states and the District of Columbia currently had enacted laws legalizing marijuana in some form. However, in a classic example of federalism at work, the GAO noted that the U.S. Attorneys will continue to prosecute cases that threaten federal marijuana enforcement priorities, despite state legalization laws. Just for the record, the current federal penalties for possession of up to 50 kilograms of marijuana or 1 to 49 marijuana plants range from up to 5 years in prison and a fine of up to $250,000 for a first offense, to up to 10 years in prison and a fine of up to $500,000 for a second offense. What are the Federal Marijuana Enforcement Priorities? Drug Enforcement Agency (DEA) officials and U.S. Attorneys in six states with medical marijuana laws told GAO investigators that their decisions on enforcement and prosecution of federal marijuana laws were typically based on three main factors: Resources needed to target the most significant public health and safety threats, such as violence associated with drug-trafficking organizations;Addressing the concerns of local law enforcement agencies regarding detrimental social side-effects related to the growth of the commercial medical marijuana industry; and Resources need to implement the DOJ’s current marijuana enforcement policy guidance. In an August 29, 2013 memo to all U.S. Attorneys, the DOJ made it clear that they should continue to use their â€Å"limited investigative and prosecutorial resources† to â€Å"rationally† address what the DOJ considers   When are Federal Marijuana Laws Most Likely to Be Enforced? In most cases, enforcement and prosecution of federal marijuana laws in the marijuana-legal states has been and will continue to be focused on preventing the following significant threats: That marijuana will be distributed to minors.That revenue from the sale of marijuana will go to criminal enterprises, gangs and drug cartels.That marijuana from states where it is legal under state laws will be distributed in other states.That state-authorized marijuana operations will be used as cover for trafficking other illegal drugs, like cocaine or heroin.That violence and firearms will be used as part of the growing and distribution of marijuana.That drugged driving and other â€Å"adverse public health consequences† will result from the use of marijuana.That marijuana will be grown on public lands, like national parks, possibly endanger the pubic or government employees.That marijuana will be possessed or used on federally-controlled property. GAO Finds Problems With DOJs Enforcement Monitoring Process According to the GAO, the DOJ molds its marijuana enforcement policies by monitoring the effects of state marijuana legalization in two ways: First, the U.S. Attorneys consult with state law enforcement officials about the potential impacts of federal marijuana enforcement policies. Second, the DOJ consults with the Drug Enforcement Administration and other federal agencies, including the Office of National Drug Control Policy to assess the marijuana enforcement-related data those agencies provide. However, the GAO reported that DOJ had failed to document and report on the federal marijuana enforcement monitoring program as required by its own guidelines. â€Å"Documenting a plan specifying its monitoring process would provide DOJ with greater assurance that its monitoring activities relative to DOJ marijuana enforcement guidance are occurring as intended,† reported the GAO. Providing all of the appropriate federal agencies with a fully documented plan would help the U.S. Attorneys identify state enforcement that are and are not effectively protecting the eight federal enforcement priorities. The DOJ agreed with the GAO’s recommendation that it create and share a fully-documented plan specifying its process for monitoring the effects of state marijuana legalization.