Astronomers have performed a comprehensive multiwavelength study of an extremely variable blazar known as AO 0235+164. Results of the new study, published Nov. 3 on the preprint server arXiv ...

The new Blazar Lens APEX 1.33x 50mm T1.8 (S35) will be available to pre-order from the 3rd of December for $799 USD (normal retail will be $899 USD). The $799 USD price will only be available during ...

Matthew Allard is a multi-award-winning, ACS accredited freelance Director of Photography with over 30 years' of experience working in more than 50 countries around the world. He is the Editor of ...

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Kraft, M., Blazar, D. and Hogan, D. (2018). The Effect of Teacher Coaching on Instruction and Achievement: A Meta-Analysis of the Causal Evidence. Review of Educational Research, 88(4), 547- 588. The ...