diff --git a/cpp/space-age/space_age.cpp b/cpp/space-age/space_age.cpp
new file mode 100644
index 0000000..1bad6c9
--- /dev/null
+++ b/cpp/space-age/space_age.cpp
@@ -0,0 +1,55 @@
+#include "space_age.h"
+
+namespace space_age {
+
+space_age::space_age(double seconds)
+  : seconds_(seconds)
+{
+}
+
+double space_age::seconds() const
+{
+    return seconds_;
+}
+
+double space_age::on_earth()   const
+{
+    return seconds() / 31557600;
+}
+
+double space_age::on_mercury() const
+{
+    return on_earth() / 0.2408467;
+}
+
+double space_age::on_venus()   const
+{
+    return on_earth() / 0.61519726;
+}
+
+double space_age::on_mars()    const
+{
+    return on_earth() / 1.8808158;
+}
+
+double space_age::on_jupiter() const
+{
+    return on_earth() / 11.862615;
+}
+
+double space_age::on_saturn()  const
+{
+    return on_earth() / 29.447498;
+}
+
+double space_age::on_uranus()  const
+{
+    return on_earth() / 84.016846;
+}
+
+double space_age::on_neptune() const
+{
+    return on_earth() / 164.79132;
+}
+
+}
diff --git a/cpp/space-age/space_age.h b/cpp/space-age/space_age.h
new file mode 100644
index 0000000..53b9e15
--- /dev/null
+++ b/cpp/space-age/space_age.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#define EXERCISM_RUN_ALL_TESTS
+
+
+namespace space_age {
+
+class space_age
+{
+    double seconds_;
+
+public:
+
+    space_age(double seconds);
+
+    double seconds() const;
+
+    double on_earth()   const;
+    double on_mercury() const;
+    double on_venus()   const;
+    double on_mars()    const;
+    double on_jupiter() const;
+    double on_saturn()  const;
+    double on_uranus()  const;
+    double on_neptune() const;
+};
+
+}