How To Measure the Size of the Universe? | PBS Spacetime
Do you ever wonder how big and old is the universe? The proper distance—the distance as would be measured at a specific time, including the present—between Earth and the edge of the observable universe is 46 billion light-years (14 billion parsecs), making the diameter of the observable universe about 93 billion light-years (28 billion parsecs).
Christmas Calamity AdToon
Christmas Calamity AdToon
Mom’s Christmas Calamity is the latest book in Judith Kerr’s work for Harper Collins Children. The book is on sale at Sainsbury’s stores and online for £3, alongside a specially created Mog soft toy for £10. Judith Kerr, HarperCollins and Sainsbury’s will donate all their profits from the sale of this book to Save the Children to improve child literacy in the UK. At
