Cover art for podcast Nibbles in Space

Nibbles in Space

17 EpisodesProduced by Malcolm Macdonald || SpaceProfWebsite

Nibbles in Space is a series of short podcasts from SpaceProf, making space more accessible. A nibble is half a byte. A nibble is 4 bits of information, whether you listen to it as a podcast or if want a little more of a Nibble you can read it at SpaceProf is Prof. Malcolm Mac… read more

episodes iconAll Episodes

000F: What has space ever done for me?

December 7th, 2020


Lidar technology, which uses a laser to measure the distance to a target, was first developed to help track spacecraft, and to help them autonomously …

000E: Do spacecraft ever collide?

November 30th, 2020


By the late 1970’s engineers were starting to grasp the risk of the ever-growing space debris population; we have best-practise guidance in place to …

000D: Who governs space?

November 23rd, 2020


Issues relating to the use of space have been dealt with through the United Nations Committee on the Peaceful Uses of Outer Space; five UN Treaties …

000C: How do we live in space?

November 16th, 2020


Space sickness is experienced by as many as half of people as they adapt to weightlessness; just like on ground, exercise and health checks are vital; as water is the most heavily consumed item for life support it’s …

000B: How do you power a spacecraft?

November 9th, 2020


The only external source of energy available to a spacecraft with reasonable flight heritage is solar radiation; the use of unfolding solar arrays is …

000A: How do you move around in space?

November 2nd, 2020


The main way of changing the velocity of a spacecraft is to take part of the mass of the spacecraft, and eject it; anything but small plane changes require a lot of energy, which can make such manoeuvres prohibitive; …

0009: Is space an empty vacuum?

October 26th, 2020


Earth’s atmosphere has an effect on all spacecraft up to at least 500km, but on occasions to over 1000km; Electric and magnetic fields exist around most bodies in space, including the Earth and the Sun; Space also …

0008: Can you make money in space?

October 18th, 2020


The most valuable service from space is communications; space enables reliable, and high-quality communications far from terrestrial infrastructure; it is estimated that over 13% of the non-financial business economy …

0007: Why go to space for science?

October 11th, 2020


By studying the space environment around the Earth we can better understand how it effects our lives, and our planet. Spaceflight osteopenia causes astronauts to lose, on average, more than 1% of bone mass per month in …

0006: Why is going to space good for society?

October 4th, 2020


Satellites monitor the Earth’s weather and are responsible for the vast majority of the accuracy of weather forecasts. A satellite-aided search and rescue system ensures immediate detection of an alert anywhere in the …

0005: Why go to space for national security?

September 30th, 2020


Space technology has probably contributed more to the pursuit of peace than just about any other technology. Locating all kinds of radio …

0004: Where are the spacecraft?

September 27th, 2020


All orbits below 2000km altitude are termed low-Earth Orbits, or LEO. The duration, or period of an orbit increases as altitude increases. A geostationary spacecraft appears stationary in the sky. If you are north of …

0003: What's an orbit?

September 20th, 2020


A satellite is an object that orbits something else. An object in orbit is in continual freefall, moving forward so fast it never hits the ground. The closest point of an orbit to Earth is termed perigee, and the …

0002: How do we get to space?

September 13th, 2020


Space travel became a seriously considered engineering endeavour through the works of Konstantin Tsiolkovsky. To access space a dedicated vehicle is …

0001: Where is space, & what’s a spacecraft?

September 6th, 2020


As altitude increases the air gets thinner, that is, atmospheric density decreases. The nominal boundary to space as the von Kármán ellipsoid, a curve, above the surface of the Earth at 100km altitude. A spacecraft is a …

0000: What’s a Nibble in Space?

August 30th, 2020


The basic unit of information is a bit. It has two possible values, “0” (zero) or “1” (one). Eight bits make up a byte. Each hexadecimal digit represents four binary digits, termed a nibble. A nibble is half a byte.


August 18th, 2020


Nibbles in Space is a series of short podcasts, making space more accessible. A nibble is half a byte. A nibble is 4 bits of information, whether you listen to it as a podcast or if want a little more of a Nibble you …

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