Cosmic Web and Cosmic History The observable universe contains around 100 billion large galaxies. These are not randomly scattered: they form filaments and other large structures that to...

Essential Tools for Professional Astronomers Computerized analysis is an essential step in the process of research for every professional astronomer and astrophysicist. That step can be ...

Cataloging the Stellar Graveyard Supernovas are among the brightest phenomena in the universe, briefly outshining whole galaxies before they fade. The relatively short duration of these ...

Surveying the X-ray Sky Many astronomical sources emit significant amounts of X-rays: matter swirling around black holes or neutron stars, hot plasma in galaxy clusters or near newborn s...

Project StatusThe DASCH project has been a herculean effort spanning two decades. In order to ensure that the plate scanning is brought to completion, and that the resulting data are arch...

An X-ray Catalog of Newborn Stars Stars are born inside dense clouds of gas that are opaque to optical light. However, newborn stars emit intense X-ray radiation which can pierce through...

Making Sense of MOOCs MOOCs differ from traditional in-person and ordinary online classes in two major areas: the large number of students they allow to enroll and the high attrition rat...

Improving Science Education for All Despite evidence for widespread interest in STEM among children across gender and race, the demographics of STEM do not reflect the population as a wh...

Improving Science Education for All Due to economic disparities between school districts and a number of other social factors, students arrive at universities with a wide range of previo...

Innovative Teaching Tools for Physical Science The physical sciences — including physics, astronomy, and Earth science — are essential parts of science, technology, engineering, and...