Nicolae Sfetcu 
Legea gravitatiei universale a lui Newton 

The book is about multidisciplinary science education. The challenges of our time, such as improving the length and quality of lives on Earth and short- and long-distance communication and transporta …

Suppose you and I still wondered whether all of the pinpoints of light in the night sky are the same distance from us. Suppose none of our contemporaries could tell us whether the Sun orbits the Eart …

More than any other book for the introductory human geography course, Contemporary Human Geography shows what geographers actually do – how they conduct research, develop new insights, teach us about …

Over the last decade, astrophysical observations of neutron stars — both as isolated and binary sources — have paved the way for a deeper understanding of the structure and dynamics of matter beyond …

Discover the mysteries of the Universe and journey to galaxies beyond our own in this fact-including companion to space. From icy worlds and hot, fiery giants to the biggest telescopes and latest spa …

You”re no idiot, of course. You know Heisenburg”s uncertainty principle has nothing to do with where you put your car keys. But modern cosmology is relatively complicated. The mystery of the univer …

An astronomer brings the mysteries of space down to earth in this accessible guide to cosmology, astrophysics, and the ageless wonder of the night sky.   The universe is big. Really big. And …

The participation of such diverse scientific and technical disciplines as meteorology, astronomy, atmospheric electricity, ionospheric and magnetospheric physics, electromagnetic wave propagation, …

Previously published as A History of the Universe in 21 Stars. ”REVISED AND UPDATED ___ ”A wonderful book about the science, history and mythology of 21 stars (and 3 impostors).” Dr David Whitehou …

Reflecting the results of twenty years; experience in the field of multipurpose flights, this monograph includes the complex routes of the trajectories of a number of bodies (e.g., space vehicles, co …