Hey my mom makes lasagna all the time and we freeze the leftovers. It will last a good two weeks in the freezer. My advice is to take it out of the fridge and stick it in the freezer. Lasagna is always better the day after it was made, i.e. as leftovers.
Thus, the part of the Universe we can observe (the Visible Universe) lies within a sphere with a radius of 13.7 billion light years centered around the Earth. 1  We can only observe 13.7 billion light years of the Universe. 2  We are only able to see the parts of the Universe whose light has had time to reach us.
The observable Universe and beyond. Read more about sharing. The further we look into space, the further back in time we go and the last thing we see is left-overs from the Big Bang. This pattern in the sky could give us clues to the Universe next door. The Universe that we can observe is fantastically large.