The universe is expanding – but what is it expanding into?

Tuesday, 13 Apr 2021

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts

Scientists and astronomers tell us that the universe is expanding. But what is it expanding into, ie what’s beyond the universe?
Phil Town, Lisbon

Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published on Sunday.

Tuesday, 13 Apr 2021

The GuardianTramp

Related Content

Readers reply: the universe is expanding – but what is it expanding into?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts

18, Apr, 2021 @1:00 PM

Has the universe got a top and bottom?

Readers answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific concepts

15, May, 2013 @2:15 PM

Will it ever be possible for humans to recreate the big bang?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific concepts

01, Mar, 2017 @11:30 AM

Readers reply: if the Earth were flat, how would our lives be different?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts

26, Sep, 2021 @1:00 PM

Why are planets always spherical?

Readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific concepts

03, Feb, 2016 @3:10 PM

Lost in space? A brief guide to the ‘holographic principle’ of the universe

Scientists believe a mathematical model could explain the origins of the cosmos. Here’s what you need to know …

Stuart Clark

31, Jan, 2017 @5:39 PM

Is a ‘negative microwave’ – a device that quickly cools food and drink – possible?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts

19, Oct, 2021 @11:00 AM

Is the universe the right way up?

Readers answer other readers' questions on subjects ranging from trivial flights of fancy to profound scientific concepts

08, May, 2013 @2:00 PM

How do spacecraft manoeuvre in the vacuum of space?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts

02, Feb, 2021 @12:00 PM

Why do cats purr?

Readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific concepts

13, Apr, 2016 @2:00 PM